104 results on '"Klein TM"'
Search Results
2. EE70 CAR-T Treatment Costs Beyond Therapy Acquisition Costs in Multiple Myeloma Patients
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Jagannath, S, primary, Joseph, N, additional, Crivera, C, additional, Jackson, CC, additional, Valluri, S, additional, Cost, P, additional, Phelps, H, additional, Slowik, R, additional, Klein, TM, additional, Smolen, L, additional, Yu, X, additional, and Cohen, A, additional
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- 2022
- Full Text
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3. EE263 Impact of Treatment Duration on the Potential Cost-Effectiveness of Disease-Modifying Therapies for the Treatment of Early Symptomatic Alzheimer's Disease
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Boustani, M, primary, Garrison, LP, additional, Smolen, L, additional, Belger, M, additional, Klein, TM, additional, Murphy, DR, additional, Burge, RT, additional, and Johnston, J, additional
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- 2022
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4. Patientenseitige Therapieziele und -nutzen in der Behandlung der Epilepsie – Entwicklung einer neuen Patient Benefit Index-Version (PBI-Epilepsie)
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Klein, TM, Hamer, HM, Cunny, J, Westermayer, V, and Blome, C
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ddc: 610 ,Medicine and health - Abstract
Hintergrund: Epilepsie ist eine der häufigsten neurologischen Erkrankungen. Zu den wichtigsten Zielgrößen der Behandlung zählen die Anfallsfreiheit oder zumindest -reduktion sowie die gesundheitsbezogene Lebensqualität der Patient*innen. Therapieziele und -nutzen von Patient*innen [zum vollständigen Text gelangen Sie über die oben angegebene URL]
- Published
- 2021
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5. Verbesserung der Kompetenz der Kompressionsbandagierung durch ein einmaliges Training – Ergebnisse einer Interventionsstudie unter Nutzung eines neu entwickelten Scores
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Protz, K, Dissemond, J, Karbe, D, Augustin, M, and Klein, TM
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ddc: 610 ,Medicine and health - Abstract
Hintergrund: Sachgerecht angelegte phlebologische Kompressionsverbände (PKV) beschleunigen die Heilung des Ulcus cruris venosum und verbessern die Lebensqualität der Patienten. Ein etabliertes Kriterium für die Qualität eines PKV ist der Druckwert am Wadenansatz (Messpunkt B1). Jedoch [zum vollständigen Text gelangen Sie über die oben angegebene URL]
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- 2021
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6. Erfahrungen und Einstellungen der versorgenden DermatologInnen zur Digitalisierung in der Dermatologie in Deutschland
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Otten, M, Klein, TM, Strömer, K, von Kiedrowski, RM, Zink, A, Kirsten, N, Augustin, M, Otten, M, Klein, TM, Strömer, K, von Kiedrowski, RM, Zink, A, Kirsten, N, and Augustin, M
- Published
- 2021
7. Bestimmung der transnationalen gesundheitsbezogenen Lebensqualität: Die kulturübergreifende Validität des überarbeiteten Wound-QoL-Fragebogens
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von Stülpnagel, C, Da Silva, N, Augustin, M, van Montfrans, C, Fife, C, Fagerdahl, AM, Gamus, A, Conde Montero, E, Klein, TM, Blome, C, and Sommer, R
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ddc: 610 ,610 Medical sciences ,Medicine - Abstract
Hintergrund und Stand (inter)nationaler Forschung: Chronische Wunden führen zu erheblichen Beeinträchtigungen im Leben und Wohlbefinden von Betroffenen durch starke Einschränkungen in allen Bereichen der gesundheitsbezogenen Lebensqualität. Die Prävalenz wird in Deutschland [zum vollständigen Text gelangen Sie über die oben angegebene URL], 19. Deutscher Kongress für Versorgungsforschung (DKVF)
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- 2020
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8. Soziale Partizipation von PatientInnen mit chronischen Wunden - ein systematisches Review
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Klein, TM, Andrees, V, Kirsten, N, Augustin, M, Blome, C, Klein, TM, Andrees, V, Kirsten, N, Augustin, M, and Blome, C
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- 2020
9. A translation and preliminary validation of the Dutch Wound-QoL questionnaire
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Amesz, SF, Klein, TM, Meulendijks, AM, Nguyen, Vi, Blome, C, Roodbol, PF, van Montfrans, Bibi, Amesz, SF, Klein, TM, Meulendijks, AM, Nguyen, Vi, Blome, C, Roodbol, PF, and van Montfrans, Bibi
- Published
- 2020
10. Interaktive Live-Teledermatologie - ein systematisches Review
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Andrees, VF, Klein, TM, Augustin, M, Otten, M, Andrees, VF, Klein, TM, Augustin, M, and Otten, M
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- 2019
11. Akzeptanz der Nutzung von elektronischen Gesundheitsakten aus der Sicht von Patienten mit Psoriasis
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Klein, TM, Augustin, M, Otten, M, Klein, TM, Augustin, M, and Otten, M
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- 2019
12. Akzeptanz von und Erwartungen über elektronischen Gesundheitsakten aus der Sicht von Dermatologen
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Klein, TM, Augustin, M, Otten, M, Klein, TM, Augustin, M, and Otten, M
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- 2019
13. Einstellungen von Patienten mit Psoriasis gegenüber elektronischen Gesundheitsakten
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Klein, TM, Augustin, M, Otten, M, Klein, TM, Augustin, M, and Otten, M
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- 2019
14. Akzeptanz von elektronischen Gesundheitsakten aus Sicht von Patienten mit Psoriasis
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Klein, TM, additional, Augustin, M, additional, and Otten, M, additional
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- 2019
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15. Wie stehen Dermatologen zur Implementierung von elektronischen Gesundheitsakten?
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Klein, TM, additional, Augustin, M, additional, and Otten, M, additional
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- 2019
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16. Cost-Effectiveness of Solifenacin for The Treatment of Overactive Bladder From A Us Private Payer and Medicare Advantage Perspective
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Ng, DB, primary, Wielage, R, additional, Klein, TM, additional, Klein, RW, additional, and Gooch, K, additional
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- 2016
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17. PUK15 - Cost-Effectiveness of Solifenacin for The Treatment of Overactive Bladder From A Us Private Payer and Medicare Advantage Perspective
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Ng, DB, Wielage, R, Klein, TM, Klein, RW, and Gooch, K
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- 2016
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18. PDB33 EVALUATION OF COST AND CLINICAL OUTCOMES BY HBA1C AT DIAGNOSIS USING VARIOUS DIABETES TREATMENT STRATEGIES
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Lee, LJ, primary, Klein, RW, additional, Klein, TM, additional, Furiak, N, additional, Peltz, G, additional, Bansal, M, additional, Jackson, JA, additional, and Juneja, R, additional
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- 2010
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19. PCV45 DETERMINING A MODEL-DERIVED RELATIVE STROKE RISK THRESHOLD TO JUSTIFY CAROTID STENTING IN SURGICAL HIGH-RISK PATIENTS
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Smolen, HJ, primary, Klein, RW, additional, Klein, TM, additional, and Cohen, DJ, additional
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- 2009
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20. PMC30 USING AN ENCOUNTER-BASED DATABASE TO VALIDATE A DISEASE PROGRESSION MODEL: LESSONS FOR MODELERS
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Klein, TM, primary, Wielage, RC, additional, Furiak, NM, additional, and Klein, RW, additional
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- 2009
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21. Adolescent pregnancy and loneliness.
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Klein TM
- Abstract
The number of adolescent pregnancies in the United States has reached epidemic proportions. Loneliness and adolescent sexuality, however, have not been previously studied. This descriptive study investigated the relationships of characterological and situational loneliness in childbearing adolescents. Related variables of shyness, self-esteem, perceived maternal and paternal expressiveness, and social support also were studied. The data were collected at multiple sites in Northern California using a convenience sample of adolescents ranging in age from 12 to 21 years: early (n = 11), middle (n = 22), and late (n = 24). Results of the analysis of variance and the Tukey-HSD indicated situational variables were more significant than characterological variables in understanding loneliness in early and middle adolescence. The characterological variables were not statistically significant. Using Pearson's correlation coefficient, significant relationships were found among and between variables. The findings suggest parental relationships were powerful in influencing the existence of loneliness as well as self-esteem, shyness, and social support. [ABSTRACT FROM AUTHOR]
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- 1998
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22. Estimating the Economically Justifiable Price of Limited-Duration Treatment with Donanemab for Early Symptomatic Alzheimer's Disease in the United States.
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Boustani M, Doty EG, Garrison LP Jr, Smolen LJ, Klein TM, Murphy DR, Spargo AW, Belger M, and Johnston JA
- Abstract
Introduction: The goal of this economic model is to estimate an economically justifiable price (EJP) for using donanemab for the treatment of early symptomatic Alzheimer's disease (AD) in the United States based on clinical data from the phase 3 TRAILBLAZER-ALZ 2 trial (NCT04437511)., Methods: We adapted an AD Markov state-transition model developed by the Institute for Clinical and Economic Review to estimate the EJP for donanemab at different willingness-to-pay (WTP) thresholds from the health care system perspective and the societal perspective as co-base cases., Results: Assuming a WTP threshold of $150,000 per quality-adjusted life-year (QALY) gained, the model estimates a 1-year (13-dose) EJP for donanemab of $80,538 from the health care system perspective and $91,126 from the societal perspective; at a WTP threshold of $100,000 per QALY gained, the model estimates a 1-year (13-dose) EJP for donanemab of $44,691 from the health care system perspective and $55,419 from the societal perspective. Mean total treatment costs per patient at the $150,000 per QALY gained EJP derived from the health care system perspective were estimated at $77,812 based on the average number of doses of donanemab patients received in the co-base case analysis. One-way sensitivity analysis (OWSA) indicated that treatment efficacy, disease severity at the time of treatment initiation, and duration of treatment effect were the main drivers of the potential EJP., Conclusions: Results from this modeling simulation informed by the TRAILBLAZER-ALZ 2 study support an EJP for limited-duration treatment with donanemab that exceeds per-dose list prices for currently available amyloid-targeting therapies, implying potentially lower lifetime costs and better value for money., (© 2024. The Author(s).)
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- 2024
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23. The impact of an enhanced health surveillance system for COVID-19 management in Serrana, Brazil.
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Ferreira NN, Garibaldi PMM, Moraes GR, Moura JC, Klein TM, Machado LE, Scofoni LFB, Haddad SK, Calado RT, Covas DT, Fonseca BAL, Palacios R, Conde MTRP, and Borges MC
- Abstract
Objective: To describe the successful implementation of an enhanced public health surveillance system based on early detection, tracing contacts, and patient follow-up and support., Study Design: A prospective observational cohort study conducted in Serrana, São Paulo State, Brazil., Methods: The implementation was based on four axes: increasing the access to SARS-CoV-2 testing; correct swab collection; testing patients with mild symptoms; and patient follow-up. Positivity rate, patient demographic and clinical characteristics, dynamics of disease severity, SARS-CoV-2 genome evolution, and the impact on COVID-19 research were assessed from August 23, 2020 to February 6, 2021 (between epidemiological week 35/2020 and 5/2021, a total of 24 weeks)., Results: The number of sites collecting rt-PCR for SARS-CoV-2 was increased from one to seven points and staff was trained in the correct use of personal protective equipment and in the swab collection technique. During the study period, 6728 samples were collected from 6155 participants vs. 2770 collections in a similar period before. SARS-CoV-2 RNA was detected in 1758 (26.1%) swabs vs. 1117 (36.7%) before the implementation of the surveillance system ( p < 0.001 ). Positivity rates varied widely between epidemiological weeks 35/2020 and 5/2021 (IQR, 12.8%-31.3%). Out of COVID-19 patients, 91.1% were adults at a median age of 35 years (IQR, 25-50 years), 42.6% were men and 57.4% were women, with a SARS-CoV-2 positivity rate of 28.6% and 24.4% ( p < 0.001 ), respectively. The most common symptoms were headache (72.6%), myalgia (65.0%), and cough (61.7%). Comorbidities were found in 20.8% of patients, the most common being hypertension and diabetes. According to the World Health Organization clinical progression scale, 93.5% of patients had mild disease, 1.6% were hospitalized with moderate disease, 3.2% were hospitalized with severe disease, and 1.4% died. The enhanced surveillance system led to the development of COVID-19 related research., Conclusions: The enhanced surveillance system in Serrana improved COVID-19 understanding and management. By integrating community and academic institutions, it was possible to monitor SARS-CoV-2 positive cases and variants, follow the epidemic trend, guide patients, and develop relevant research projects., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2022 The Authors.)
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- 2022
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24. Assessing the Cost-effectiveness of a Hypothetical Disease-modifying Therapy With Limited Duration for the Treatment of Early Symptomatic Alzheimer Disease.
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Boustani M, Doty EG, Garrison LP Jr, Smolen LJ, Belger M, Klein TM, Murphy DR, Burge R, Wall JK, and Johnston JA
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- Humans, United States, Cost-Benefit Analysis, Quality-Adjusted Life Years, Alzheimer Disease drug therapy
- Abstract
Purpose: Clinical trials have produced promising results for disease-modifying therapies (DMTs) for Alzheimer's disease (AD); however, the evidence on their potential cost-effectiveness is limited. This study assesses the cost-effectiveness of a hypothetical DMT with a limited treatment duration in AD., Methods: We developed a Markov state-transition model to estimate the cost-effectiveness of a hypothetical DMT plus best supportive care (BSC) versus BSC alone among Americans living with mild cognitive impairment (MCI) due to AD or mild AD. AD states included MCI due to AD, mild AD, moderate AD, severe AD, and death. A hypothetical DMT was assumed to confer a 30% reduction in progression from MCI and mild AD. The base case annual drug acquisition cost was assumed to be $56,000. Other medical and indirect costs were obtained from published literature or list prices. Utilities for patients and caregivers were obtained from the published literature and varied by AD state and care setting (community care or long-term care). We considered 3 DMT treatment strategies: (1) treatment administered until patients reached severe AD (continuous strategy), (2) treatment administered for a maximum duration of 18 months or when patients reached severe AD (fixed-duration strategy), and (3) 40% of patients discontinuing treatment at 6 months because of amyloid plaque clearance and the remaining patients continuing treatment until 18 months or until they reached severe AD (test-and-discontinue strategy). Incremental cost-effectiveness ratios (ICERs) were calculated as the incremental cost per quality-adjusted life-year (QALY) gained., Findings: From the health care sector perspective, continuous treatment with a hypothetical DMT versus BSC resulted in an ICER of $612,354 per QALY gained. The ICER decreased to $157,288 per QALY gained in the fixed-duration strategy, driven by large reductions in treatment costs. With 40% of patients discontinuing treatment at 6 months (test-and-discontinue strategy), the ICER was $125,631 per QALY gained. In sensitivity and scenario analyses, the ICER was the most sensitive to changes in treatment efficacy, treatment cost, and the initial population AD state distribution. From the modified societal perspective, ICERs were 6.3%, 20.4%, and 25.1% lower than those from the health care sector perspective for the continuous, fixed-duration, and test-and-discontinue strategies, respectively., Implications: Under a set of assumptions for annual treatment costs and the magnitude and duration of treatment efficacy, DMTs used for a limited duration may deliver value consistent with accepted US cost-effectiveness thresholds., Competing Interests: Declaration of Interest M. Boustani and L.P. Garrison report fees from Eli Lilly and Company during conduct of this study. E.G. Doty, M. Belger, R. Burge, J.K. Wall, and J.A. Johnston are employees and minor shareholders of Eli Lilly and Company. L.J. Smolen, T.M. Klein, D.R. Murphy are employees of Medical Decision Modeling Inc, which received compensation from Eli Lilly for the research that contributed to this article. The authors have indicated that they have no other conflicts of interest regarding the content of this article., (Copyright © 2022 Eli Lilly and Company. Published by Elsevier Inc. All rights reserved.)
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- 2022
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25. Measuring patient-relevant benefits in the treatment of psoriasis with the Patient Benefit Index: development and preliminary validation of a 10-item short form.
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Blome C, von Stülpnagel CC, Augustin M, Mrowietz U, Reich K, Muehlan H, Kirsten N, Langenbruch AK, Sorbe C, and Klein TM
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- Humans, Psychometrics, Psoriasis diagnosis, Psoriasis drug therapy
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- 2022
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26. Content validity of five single-item instruments in adolescents with alopecia areata.
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Klein TM
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- Adolescent, Humans, Alopecia Areata diagnosis
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- 2022
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27. Development of an efficient marker-free soybean transformation method using the novel bacterium Ochrobactrum haywardense H1.
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Cho HJ, Moy Y, Rudnick NA, Klein TM, Yin J, Bolar J, Hendrick C, Beatty M, Castañeda L, Kinney AJ, Jones TJ, and Chilcoat ND
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- Agrobacterium tumefaciens genetics, Genetic Vectors, Plants, Genetically Modified, Transformation, Genetic, Ochrobactrum genetics, Glycine max genetics
- Abstract
We have discovered a novel bacterium, Ochrobactrum haywardense H1 (Oh H1), which is capable of efficient plant transformation. Ochrobactrum is a new host for Agrobacterium-derived vir and T-DNA-mediated transformation. Oh H1 is a unique, non-phytopathogenic species, categorized as a BSL-1 organism. We engineered Oh H1 with repurposed Agrobacterium virulence machinery and demonstrated Oh H1 can transform numerous dicot species and at least one monocot, sorghum. We generated a cysteine auxotrophic Oh H1-8 strain containing a binary vector system. Oh H1-8 produced transgenic soybean plants with an efficiency 1.6 times that of Agrobacterium strain AGL1 and 2.9 times that of LBA4404Thy-. Oh H1-8 successfully transformed several elite Corteva soybean varieties with T0 transformation frequency up to 35%. In addition to higher transformation efficiencies, Oh H1-8 generated high-quality, transgenic events with single-copy, plasmid backbone-free insertion at frequencies higher than AGL1. The SpcN selectable marker gene is excised using a heat shock-inducible excision system resulting in marker-free transgenic events. Approximately, 24.5% of the regenerated plants contained only a single copy of the transgene and contained no vector backbone. There were no statistically significant differences in yield comparing T3 null-segregant lines to wild-type controls. We have demonstrated that Oh H1-8, combined with spectinomycin selection, is an efficient, rapid, marker-free and yield-neutral transformation system for elite soybean., (© 2022 Corteva Agriscience. Plant Biotechnology Journal published by Society for Experimental Biology and The Association of Applied Biologists and John Wiley & Sons Ltd.)
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- 2022
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28. Real-World Experience of Patient-Relevant Benefits and Treatment Satisfaction with Apremilast in Patients with Psoriasis: An Analysis of the APPRECIATE Study.
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Klein TM, Blome C, Kleyn CE, Conrad C, Sator PG, Ståhle M, Eyerich K, Radtke MA, Bundy C, Cordey M, Griffiths CEM, and Augustin M
- Abstract
Introduction: In the real-world APPRECIATE study (NCT02740218), most patients with psoriasis demonstrated notable improvements on disease severity measures and reported clinically meaningful treatment benefits with apremilast., Objective: We aim to further describe patient-relevant needs and benefits and patient satisfaction with apremilast, including subgroup analyses based on patient characteristics., Methods: APPRECIATE, a multinational, retrospective, cross-sectional study, enrolled patients with chronic plaque psoriasis who started apremilast according to the European label. Patient Benefit Index (PBI; range 0 (no patient-relevant benefit) to 4 (maximum patient-relevant benefit), global PBI score ≥ 1 indicating minimum patient-relevant benefit and ≥ 3 indicating high benefit) and nine-item Treatment Satisfaction Questionnaire for Medication (TSQM-9; range 0-100) were assessed 6 (± 1) months after apremilast initiation and summarized descriptively. Relationships between global PBI and TSQM-9 assessments were analyzed by Pearson correlations., Results: Of 480 enrolled patients, 347 (72.3%) had remained on apremilast at 6 (± 1) months; 90.9% (300/330) achieved global PBI score ≥ 1. Mean (standard deviation) global PBI score was 2.8 (1.2). Higher achievement of global PBI score ≥ 3 was observed in patients with no prior treatments (61.1% (22/36)) or prior phototherapy (64.6% (42/65)) versus prior conventional systemic (54.4% (100/184)) or biologic (38.6% (17/44)) treatment. Strong correlations were observed between the global PBI score and the TSQM-9 global satisfaction and effectiveness subscale scores., Conclusion: Patients continuing apremilast for 6 (± 1) months in APPRECIATE reported patient-relevant treatment benefits. Findings suggest that receiving apremilast earlier versus later in treatment management is consistent with greater improvements in patient-relevant treatment outcomes., (© 2021. The Author(s).)
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- 2022
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29. Cost-effectiveness of vibegron for the treatment of overactive bladder in the United States.
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Chen JV, Klein TM, Nesheim J, and Mudd PN Jr
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- Acetanilides therapeutic use, Adrenergic beta-3 Receptor Agonists adverse effects, Aged, Cholinergic Antagonists therapeutic use, Cost-Benefit Analysis, Humans, Medicare, Muscarinic Antagonists, Pyrimidinones, Pyrrolidines, Treatment Outcome, United States, Urinary Bladder, Overactive drug therapy
- Abstract
Aims: To evaluate the cost-effectiveness of vibegron compared with other oral pharmacologic therapies as treatment for overactive bladder (OAB)., Methods: A semi-Markov model with monthly cycles was developed to support a lifetime horizon of vibegron 75 mg from a US commercial payor or Medicare perspective. The model incorporated efficacy (reductions in daily micturitions and urinary incontinence episodes), adverse events, OAB-related comorbidities, drug-drug interactions, anticholinergic burden, and treatment persistence. Direct costs and quality-adjusted life years (QALY) were accumulated over time. The primary outcome was the cost per QALY incremental cost-effectiveness ratio (ICER). One-way (OWSA) and probabilistic sensitivity analyses (PSA) were performed., Results: For commercial payors, vibegron was cost-effective at a willingness-to-pay (WTP) threshold of $50,000/QALY versus mirabegron 50 mg (ICER, $9,311) and at a WTP threshold of $150,000/QALY versus mirabegron 25 mg (ICER, $141,957) and versus an anticholinergic basket based on market share (ICER, $118,121). For Medicare, vibegron was cost-effective at a WTP threshold of $50,000/QALY versus mirabegron 50 mg (ICER, $12,154) and at a WTP threshold of $100,000/QALY versus mirabegron 25 mg (ICER, $99,150) and versus an anticholinergic market basket (ICER, $60,756). For commercial payors and Medicare, OWSAs for vibegron versus mirabegron indicated cost-effectiveness was most sensitive to vibegron persistence at 1 and 12 months. PSAs indicated that vibegron was cost-effective versus mirabegron 50 mg 98.6% and 100% of the time at $50,000/QALY for commercial payors and Medicare payors, respectively., Limitations: Due to lack of real-world data available on persistence, vibegron was assumed to have the same persistence as mirabegron 50 mg. Long-term efficacy was assumed to be sustained beyond 52 weeks in the absence of clinical trials longer than 52 weeks., Conclusions: Vibegron is cost-effective from a commercial payor (WTP threshold $150,000/QALY) and Medicare (WTP threshold $100,000/QALY) perspective when compared with other oral pharmacologic treatments for OAB.
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- 2022
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30. Psychometric properties of the short version of the Freiburg Life Quality Assessment for chronic venous disease.
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Klein TM, Bal B, Newi AL, Bruning G, Sommer R, Augustin M, and Blome C
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- Adult, Aged, Chronic Disease, Female, Humans, Male, Middle Aged, Prospective Studies, Varicose Veins, Venous Insufficiency, Diagnostic Self Evaluation, Psychometrics, Quality of Life, Self Report
- Abstract
Background: Chronic venous disease is a frequent vascular condition. International societies have recommended the use of health-related quality of life (HRQoL) instruments in the assessment of patients with vascular diseases. Thus, the Freiburg Life Quality Assessment for chronic venous disease, 10-item questionnaire (FLQA-VS-10) was developed. The aim of the present study was to validate the FLQA-VS-10 in a prospective study., Methods: We recruited 100 patients with recurrent varicosis or incomplete or complete venous insufficiency undergoing interventional vein treatment (high ligation of the great or small saphenous vein or endovenous ablation therapy). These patients completed the FLQA-VS-10 and instruments assessing convergent validation criteria at four points: preoperatively (T1), postoperatively (T2) and twice 3 years later with a 1-week interval (T3 and T4)., Results: The mean age was 56.0 ± 13.7 years, and 66.0% were women. The patients had presented with recurrent varicosis of the saphenofemoral junction (28.0%), recurrent varicosis of the saphenopopliteal junction (1.0%), incomplete or complete insufficiency of the great saphenous vein (69.0%), or complete insufficiency of the small saphenous vein (2.0%). The items showed few missing values. The FLQA-VS-10 global score showed no ceiling effect (patients reporting the highest possible impairments in HRQoL) but did show a floor effect (patients reporting the lowest possible impairments in HRQoL), which was highest at the postoperative assessments. The internal consistency of the global score was high at all measurement points. A convergent validity and responsiveness analysis revealed that the FLQA-VS-10 correlated in the expected direction with the convergent instruments, including the Freiburg Life Quality Assessment for venous diseases (venous disease-specific HRQoL) and the five-level EQ-5D (generic HRQoL). Data from T3 and T4 revealed high test-retest reliability (intraclass correlation, 0.92). Overall, the patients stated that the FLQA-VS-10 was comprehensible, comprehensive, and easy to complete., Conclusions: Our data suggest that the FLQA-VS-10 is a reliable, valid, responsive, and feasible HRQoL questionnaire for patients with chronic venous diseases. This questionnaire can serve as short and easy-to-use instrument to assess patient-reported outcomes in the treatment of these patients., (Copyright © 2021 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.)
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- 2022
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31. Nail Psoriasis and Quality-of-Life Measurement in Clinical Trials: Call for the Use of Nail-Specific Instruments.
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Blome C, Augustin M, and Klein TM
- Subjects
- Humans, Meta-Analysis as Topic, Nail Diseases psychology, Nail Diseases therapy, Psoriasis psychology, Psoriasis therapy, Randomized Controlled Trials as Topic, Reproducibility of Results, Severity of Illness Index, Surveys and Questionnaires, Nail Diseases diagnosis, Patient Reported Outcome Measures, Psoriasis diagnosis, Quality of Life
- Abstract
Nail involvement is frequent in people with psoriasis. It can considerably impair health-related quality of life (HRQoL) beyond the impairments due to other psoriasis symptoms, for example, because patients feel ashamed of visible nail defects or because of the functional impairment in manual activities and walking. In clinical trials on nail psoriasis, it is therefore crucial to assess whether the treatment reduces HRQoL impairments that are specific to nail psoriasis. For this purpose, two validated patient questionnaires are available, the Nail Psoriasis Quality of Life Scale (NPQ10) and the Nail Assessment in Psoriasis and Psoriatic Arthritis-Quality of Life (NAPPA-QOL). The ten-item NPQ10 has the advantage of being short and thus quick to administer. The 20-item NAPPA-QOL, in contrast, assesses the different dimensions of HRQoL which is considered a multi-dimensional construct. Yet most randomized controlled trials on nail psoriasis do not evaluate HRQoL improvement. If they do, a number of different instruments are used, most of which are not nail specific. This makes comparison of trial outcomes difficult. Harmonizing the measurement of HRQoL in future clinical trials on nail psoriasis would improve comparability across studies and would also enhance the reliability of meta-analyses., (© 2021. The Author(s).)
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- 2021
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32. Patient needs and benefits of sublingual immunotherapy for grass pollen-induced allergic rhinitis: an observational study.
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Klein TM, Hadler M, Augustin M, and Blome C
- Subjects
- Adolescent, Adult, Aged, Allergens administration & dosage, Antigens, Plant administration & dosage, Child, Child, Preschool, Female, Humans, Longitudinal Studies, Male, Middle Aged, Patient Reported Outcome Measures, Plant Extracts administration & dosage, Poaceae, Young Adult, Rhinitis, Allergic, Seasonal therapy, Sublingual Immunotherapy methods, Treatment Outcome
- Abstract
Aim: Clinical efficacy of sublingual immunotherapy for grass pollen-induced allergic rhinitis (AR) needs to translate into patient benefit. Patients & methods: Patients received Oralair (Stallergenes, Antony, France) in real-life medical practice. Patient-relevant treatment benefits were measured with the AR-specific Patient Benefit Index. Subgroups were analyzed regarding distinct patient characteristics. Results: Data of 883 patients (children, adolescents, and adults) were analyzed. The highest-ranked patient needs referred to having less AR symptoms, being able to go outdoors, and being free in the choice of leisure activities. Most patients (89.2-94.6%) attained at least minimally relevant benefit. All subgroups reported relevant benefits, with significantly higher scores in some subgroups. Conclusion: Treatment with Oralair was associated with considerable patient-relevant benefit in all age groups.
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- 2021
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33. Formation of Surface Impurities on Lithium-Nickel-Manganese-Cobalt Oxides in the Presence of CO 2 and H 2 O.
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Fang Z, Confer MP, Wang Y, Wang Q, Kunz MR, Dufek EJ, Liaw B, Klein TM, Dixon DA, and Fushimi R
- Abstract
Surface impurities involving parasitic reactions and gas evolution contribute to the degradation of high Ni content LiNi
x Mny Coz O2 (NMC) cathode materials. The transient kinetic technique of temporal analysis of products (TAP), density functional theory, and infrared spectroscopy have been used to study the formation of surface impurities on varying nickel content NMC materials (NMC811, NMC622, NMC532, NMC433, NMC111) in the presence of CO2 and H2 O. CO2 reactivity on a clean surface as characterized by CO2 conversion rate in the TAP reactor follows the order: NMC811 > NMC622 > NMC532 > NMC433 > NMC111. The capacity of CO2 uptake follows a different order: NMC532 > NMC433 > NMC622 > NMC811 > NMC111. Moisture pretreatment slows down the direct CO2 adsorption process and creates additional active sites for CO2 adsorption. Electronic structure calculations predict that the (012) surface is more reactive than the (1014) surface for CO2 and H2 O adsorption. CO2 adsorption leading to carbonate formation is exothermic with formation of ion pairs. The average CO2 binding energies on the different materials follow the CO2 reactivity order. Water hydroxylates the (012) surface and surface OH groups favor bicarbonate formation. Water creates more active sites for CO2 adsorption on the (1014) surface due to hydrogen bonding. The composition of surface impurities formed in ambient air exposure is dependent on water concentration and the percentage of different crystal planes. Different surface reactivities suggest that battery performance degradation due to surface impurities can be mitigated by precise control of the dominant surfaces in NMC materials.- Published
- 2021
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34. Social participation of people with chronic wounds: A systematic review.
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Klein TM, Andrees V, Kirsten N, Protz K, Augustin M, and Blome C
- Subjects
- Aged, Humans, Social Support, Quality of Life, Social Participation, Wound Healing
- Abstract
Living with chronic ulcers can be burdensome and restrictive, with regard to not only physical and psychological but also social well-being. This review aims to analyse social participation in patients with chronic wounds and to compare results across different wound types. A search string was applied in several electronic databases. Results were screened according to predefined inclusion and exclusion criteria. Data of eligible articles were extracted and synthesised narratively. The search revealed 42 eligible publications. Only minor differences across different ulcer types could be detected. Overall, family members were the main social contacts for patients; they often provided wound care and emotional support. Patients had few non-family relations, but those existing were often very close. Patients felt guilty as their condition imposed burden on family and friends, as well. A close relationship with nurses was described. Restrictions were caused by direct and indirect consequences of the wound. Overall, social support and social connections were reduced in wound patients. Inconsistent results were found regarding social isolation. In summary, people with chronic wounds experience impairments in all aspects of social participation. Therefore, social participation deserves increased attention in routine care both as a trigger of burden and as an outcome of therapy., (© 2020 The Authors. International Wound Journal published by Medicalhelplines.com Inc (3M) and John Wiley & Sons Ltd.)
- Published
- 2021
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35. Classifying the severity of bullous pemphigoid disease.
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Blome C and Klein TM
- Subjects
- Humans, Pemphigoid, Bullous diagnosis
- Published
- 2021
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36. Assessing the quality of life of people with chronic wounds by using the cross-culturally valid and revised Wound-QoL questionnaire.
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von Stülpnagel CC, da Silva N, Augustin M, van Montfrans C, Fife C, Fagerdahl AM, Gamus A, Klein TM, Blome C, and Sommer R
- Subjects
- Aged, Cross-Sectional Studies, Female, Humans, Psychometrics, Reproducibility of Results, Surveys and Questionnaires, Quality of Life, Wound Healing
- Abstract
The Wound-QoL is an often used reliable and valid measure, originally developed in Germany. It has been sequentially translated and validated for other languages/countries, for the measurement of health-related quality of life (HRQoL) in patients with chronic wounds. However, a study from the United States postulated its benefits from further adaptations. Furthermore, some patients struggled to provide an answer for some of the items. We aimed to test the cross-cultural structure and psychometric performance of the questionnaire to suggest necessary revisions. This cross-sectional analysis of existing data sets included 1185 patients from Germany, the US, the Netherlands, Spain, Sweden, and Israel. Patients in the U.S. Wound Registry completed the Wound-QoL during routine care. Different studies comprised the data collection in the other countries. Almost half of the patients were women (48.4%). Furthermore, 42.6% were diagnosed with leg ulcers. Their average age was 66 years. We used a confirmatory factor analysis and an unconstrained graded response model. We revised and shortened the Wound-QoL from 17 to 14 items. In addition, we supported the cross-cultural metric invariance of the revised Wound-QoL questionnaire. The new version with 14 items and three dimensions revealed good psychometric properties with Cronbach's alpha (α) of 0.913 for the total score, and 0.709-0.907 for different dimensions. Furthermore, we provided strict invariance for different clinical variables. In conclusion, the revised Wound-QoL is a reliable and cross-cultural instrument to measure the HRQoL on patients with chronic wounds. Future studies should analyse the revised Wound-QoL for convergent validity with generic HRQoL questionnaires as well as for determining its sensitivity to clinical change., (© 2021 The Authors. Wound Repair and Regeneration published by Wiley Periodicals LLC on behalf of The Wound Healing Society.)
- Published
- 2021
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37. Increasing competence in compression therapy for venous leg ulcers through training and exercise measured by a newly developed score-Results of a randomised controlled intervention study.
- Author
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Protz K, Dissemond J, Karbe D, Augustin M, and Klein TM
- Subjects
- Humans, Leg, Pressure, Wound Healing, Compression Bandages, Varicose Ulcer therapy
- Abstract
Compression therapy with short-stretch bandages is the most common treating option for patients with venous leg ulcers in the decongestion phase in Germany. This randomised controlled intervention study examined whether a training is suitable to sustainably improve the skills of health care professionals. Altogether 55 nurses from hospitals and outpatient care participated. They were randomly assigned to case and control groups. Participants' abilities to properly apply a compression bandaging were assessed before and after a training session as well as after 1 and 3 months using a newly developed score (CCB score) based on six control parameters (CPs): padding, starting point, heel inclusion, heart direction, pressure at forefoot (A) and calf base (B1). After training, a significant increase in competence was observed, which only decreased non-significantly over the observation period: The average CCB score was 2.796 at V0, 4.89 at V1, 4.88 at V2, and 4.66 at V3. The CPs for pressure at A and B1 were met by a maximum of 42.6 and 43.6%, respectively, at all timepoints. The CP starting point was fulfilled by at least 61.7% after training, the CPs heart direction, heel and underpadding by at least 89.4, 96.4, and 97.9%, respectively. As a result of our study, it can be concluded that training improves the ability of users to apply compression bandagings, but one-off training does not appear to be suitable to improve the ability to apply compression bandagings with a therapy-relevant pressure. Therefor more training especially with pressure measuring devices would be necessary., (© 2021 The Authors. Wound Repair and Regeneration published by Wiley Periodicals LLC on behalf of The Wound Healing Society.)
- Published
- 2021
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38. Attitudes towards using electronic health records of patients with psoriasis and dermatologists: a cross-sectional study.
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Klein TM, Augustin M, Kirsten N, and Otten M
- Subjects
- Attitude, Cross-Sectional Studies, Dermatologists, Humans, Electronic Health Records, Psoriasis therapy
- Abstract
Background: Electronic health records (EHRs) offer various advantages for healthcare delivery, especially for chronic and complex diseases such as psoriasis. However, both patients' and physicians' acceptability is required for EHRs to unfold their full potential. Therefore, this study compares patients' and physicians' attitudes towards using EHRs in routine psoriasis care., Methods: For the purpose of this study, a questionnaire was developed based on literature research and analyses of previously conducted focus groups. Participants completed either a paper-based or an electronic version of the questionnaire. Patient recruitment took place at an dermatological outpatient clinic and via several online pathways (patient associations, and social media). Physicians were recruited via a mailing list of a dermatological association and at a dermatological conference. Patients' and physicians' responses were compared using χ
2 tests and Fisher's exact tests., Results: The study consisted of 187 patients and 44 dermatologists. Patients compared to physicians rated almost all potential EHR uses as significantly more important and expected significantly more potential benefits from EHRs., Conclusions: Patients showed positive expectations towards using EHRs, whereas there was more scepticism in the physician sample. This aligns with previous findings. These differences illustrate the necessity to involve all stakeholders, especially patients and physicians, into the process of developing and implementing EHRs.- Published
- 2020
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39. A translation and preliminary validation of the Dutch Wound-QoL questionnaire.
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Amesz SF, Klein TM, Meulendijks AM, Nguyen TV, Blome C, Roodbol PF, and van Montfrans C
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Chronic Disease, Female, Humans, Male, Middle Aged, Netherlands, Young Adult, Quality of Life, Surveys and Questionnaires, Translations, Wounds and Injuries
- Abstract
Background: Chronic wounds have a major impact on patients' health-related quality of life (HRQoL). Therefore, measuring HRQoL is an indispensable part of the treatment of patients with chronic wounds. The aim of this study was to translate and validate the Wound-QoL, a wound-specific HRQoL questionnaire, in a Dutch population., Methods: The Wound-QoL was translated into Dutch according to the international standards. Patients with chronic wounds were asked to complete questionnaires at baseline (T0) and after six weeks (T1), including Wound-QoL, EQ-5D-3L (a generic questionnaire to measure HRQoL) and a visual analogue scale (VAS) measuring wound pain. If patients were not able to complete the questionnaire by themselves, it was read out to them by a nurse. Further data were obtained from medical records., Results: Of the 120 patients included, 64 (53.3%) completed the questionnaire by themselves. To 55 patients (45.8%), the questionnaire was read out. The internal consistency of the Wound-QoL global score was high at both time points (T0: Cronbach's α = 0.89, T1: Cronbach's α = 0.92). The item selectivity for global score ranged from r = 0.25 to r = 0.77 at T0 and from r = 0.40 to r = 0.79 at T1. Overall, the self-completion and read-out subgroups showed similar internal consistency and item selectivity scores. With regard to convergent validity, significant correlations were found between Wound-QoL and EQ-5D-3L (T0: r = - 0.45, p < 0.001, T1: r = - 0.50, p < 0.001) as well as between Wound-QoL and pain VAS (T0: r = 0.23, p = 0.012, T1: r = 0.37, p = 0.001) at both time points. Responsiveness analyses showed significant correlations between changes in Wound-QoL and changes in EQ-5D-3L (r = - 0.37, p < 0.001), pain VAS (r = 0.24, p = 0.044) and wound size (r = 0.24, p = 0.013). The self-completion and read-out subgroups showed differences in convergent validity and responsiveness., Conclusions: The results indicate that the Dutch version of the Wound-QoL has positive psychometric properties. However, more research is needed to further explore the differences between self-completed and read-out questionnaires.
- Published
- 2020
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40. Live interactive teledermatology compared to in-person care - a systematic review.
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Andrees V, Klein TM, Augustin M, and Otten M
- Subjects
- Costs and Cost Analysis, Dermatology economics, Humans, Telemedicine economics, Videoconferencing, Dermatology methods, Telemedicine methods
- Abstract
Teledermatology is a rapidly developing field of dermatological care, giving the opportunity to deliver more efficient healthcare to patients in remote areas. Live interactive (LI) teledermatology uses videoconferencing and, hence, allows for direct communication. A current overview on effectiveness, costs, feasibility and accuracy of LI applications compared to standard care is missing. The present systematic review provides this overview on LI teledermatology. Two databases were searched until April 2019, followed by title, abstract and full-text screening. Additionally, reference lists of the detected eligible articles were screened for further eligible studies. Studies comparing LI applications with standard care were included. Data on study design, sample size, country, objectives, main findings and characteristics of LI applications were extracted. Results on time effectiveness, costs, accuracy and feasibility of LI applications were synthesized. Additionally, the quality of included studies was assessed. Twenty-three publications were included in the final analysis: seventeen case-control studies and six randomized controlled trials. Included studies were published between 1997 and 2017. Study quality differed across studies. The studies were carried out in eight different countries. Eleven studies focused on patient consultation, three on patient organization and nine on combined applications of the aforementioned. Nine studies investigated applications facilitating patient-provider interaction. Fourteen studies evaluated applications combining patient-provider and provider-provider interaction, meaning the patient sits next to one provider while using LI applications to interact with another provider. This review reveals that LI applications can be a time effective substitute of or supplement to standard dermatological care. Results demonstrated that LI and standard care are comparable with regard to feasibility and accuracy. No clear tendencies can be reported with regard to costs. However, there is a lack of current comparative studies., (© 2019 The Authors. Journal of the European Academy of Dermatology and Venereology published by John Wiley & Sons Ltd on behalf of European Academy of Dermatology and Venereology.)
- Published
- 2020
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41. Validation of the Arabic and Tunisian Arabic version of the KINDL questionnaires for children with diabetes type 1.
- Author
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Essaddam L, Ben Mansour A, Ben Amor A, Ravens-Sieberer U, Klein TM, and Ben Becher S
- Subjects
- Adolescent, Child, Child, Preschool, Cross-Sectional Studies, Female, Humans, Male, Psychometrics, Reproducibility of Results, Tunisia, Diabetes Mellitus, Type 1 psychology, Quality of Life psychology, Surveys and Questionnaires standards, Translations
- Abstract
Aim: We aimed to validate the Arabic and Tunisian Arabic versions of diabetes- specific quality of life (QOL) instrument KINDL-R Diabetes Module for Tunisian children population with type 1 diabetes., Patients and Methods: This a cross-sectional study to validate Arabic and Tunisian KINDL QOL instrument that we translate in literary and dialectal Arabic. Both forward and backward translations from the German version of KINDL QOL into Arabic version were performed. Our project received a GPED grant in August 2014. After the face validity of the Arabic version was established, it was then pilot-tested. Finally, the validity and reliability of the final version of the Arabic KINDL questionnaire were evaluated., Results: The KINDL-R Diabetes Module (DM) questionnaire of QOL was given to 212 persons : 108 children (aged 3-17 years) with T1DM and 104 parents. The Cronbach's alpha coefficients of the overall items and the main domains was about 0.7. The mean total score of the KINDL-R DM was 69,56  ± 14,01 in children aged 7-13 years, 59.93± 15.17 in children aged 13-17 years and 56.6± 9.9 in parents (higher scores indicate better QOL). The parents reported lower diabetes-specific HRQOL than the children themselves (p < 0.01).Emotional score was correlated to environment (p = 0,03). Self-esteem was reported to environment (p = 0,02) and mother's instruction level's (p = 0,014)., Conclusions: The KINDL-R Diabetes Module (DM) of QOL in literary and dialectal Arabic have sufficient acceptability, reliability and validity so as to be used for the purposes of a comparative in Tunisian and Arabic populations.
- Published
- 2019
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42. How should electronic health records be designed? A cross-sectional study in patients with psoriasis.
- Author
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Klein TM, Augustin M, and Otten M
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Communication, Cross-Sectional Studies, Decision Making, Female, Humans, Male, Middle Aged, Privacy, Prospective Studies, Social Media, Surveys and Questionnaires, Young Adult, Electronic Health Records, Patient Acceptance of Health Care, Psoriasis psychology
- Abstract
Background: Electronic health records (EHRs) are promising tools for routine care. These applications might not only enhance the interaction between patient and physician but also support therapy management. This is crucial in complex and chronic conditions like psoriasis. However, EHRs can only unfold their full potential when being accepted by the users. Therefore, this study aims to analyse how EHRs should be designed for patients with psoriasis and to identify differences between patient subgroups., Methods: We developed a questionnaire on the acceptability of EHRs based on literature research and results from focus groups. Participants completed a paper-based or electronic version of the questionnaire. We recruited participants at an outpatient clinic as well as online via patient associations and a social media platform. We analysed data using descriptive statistics and bivariate analyses applying Chi-square and Fisher's exact test., Results: The sample encompassed 187 patients with psoriasis. Data reveals that 84.4% of the participants can think of entering data into an EHR. Participants prefer entering data at home (72.2%) instead of entering data in the waiting room (44.9%) and using an own internet-ready device (laptop/computer: 62.6%; smartphone/tablet: 61.5%) instead of a provided device (46.0%). Altogether, 55.6% of participants would accept entering data on a monthly basis when this lasts between one and 10 minutes and further 27.8% would accept even longer lasting data entry. Data privacy is of great concern (e.g. patient should decide who has access to data: 96.7%). Subgroup analyses reveal differences with regard to age, educational level, burden due to psoriasis, number of internet activities, use of electronic questionnaires and mode of administration., Conclusion: The high acceptance of entering data is favourable for the implementation of EHRs. The results suggest technical and structural recommendations: Differences between subgroups support the development of flexible EHRs encompassing a basic module, which is expandable with further add-ons, and compatible to different devices. Furthermore, involving patients by entering data into an EHR requires that physicians communicate open-mindedly with the patient and consider data throughout decision-making. Patients should remain owner of their own health data and decide about its processing.
- Published
- 2019
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43. The NLRP3 inflammasome is involved with the pathogenesis of Mayaro virus.
- Author
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de Castro-Jorge LA, de Carvalho RVH, Klein TM, Hiroki CH, Lopes AH, Guimarães RM, Fumagalli MJ, Floriano VG, Agostinho MR, Slhessarenko RD, Ramalho FS, Cunha TM, Cunha FQ, da Fonseca BAL, and Zamboni DS
- Subjects
- Adult, Aged, Alphavirus Infections metabolism, Animals, Carrier Proteins metabolism, Caspase 1 metabolism, Chikungunya virus metabolism, Dengue Virus metabolism, Disease Models, Animal, Female, Humans, Inflammasomes immunology, Inflammation metabolism, Macrophages immunology, Macrophages metabolism, Male, Mice, Mice, Inbred C57BL, Mice, Knockout, Middle Aged, NLR Family, Pyrin Domain-Containing 3 Protein immunology, Reactive Oxygen Species metabolism, Togaviridae pathogenicity, Zika Virus metabolism, Alphavirus Infections immunology, Inflammasomes metabolism, NLR Family, Pyrin Domain-Containing 3 Protein metabolism
- Abstract
Mayaro virus (MAYV) is an arbovirus that circulates in Latin America and is emerging as a potential threat to public health. Infected individuals develop Mayaro fever, a severe inflammatory disease characterized by high fever, rash, arthralgia, myalgia and headache. The disease is often associated with a prolonged arthralgia mediated by a chronic inflammation that can last months. Although the immune response against other arboviruses, such as chikungunya virus (CHIKV), dengue virus (DENV) and Zika virus (ZIKV), has been extensively studied, little is known about the pathogenesis of MAYV infection. In this study, we established models of MAYV infection in macrophages and in mice and found that MAYV can replicate in bone marrow-derived macrophages and robustly induce expression of inflammasome proteins, such as NLRP3, ASC, AIM2, and Caspase-1 (CASP1). Infection performed in macrophages derived from Nlrp3-/-, Aim2-/-, Asc-/-and Casp1/11-/-mice indicate that the NLRP3, but not AIM2 inflammasome is essential for production of inflammatory cytokines, such as IL-1β. We also determined that MAYV triggers NLRP3 inflammasome activation by inducing reactive oxygen species (ROS) and potassium efflux. In vivo infections performed in inflammasome-deficient mice indicate that NLRP3 is involved with footpad swelling, inflammation and pain, establishing a role of the NLRP3 inflammasome in the MAYV pathogenesis. Accordingly, we detected higher levels of caspase1-p20, IL-1β and IL-18 in the serum of MAYV-infected patients as compared to healthy individuals, supporting the participation of the NLRP3-inflammasome during MAYV infection in humans., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2019
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44. West Nile virus infections are here! Are we prepared to face another flavivirus epidemic?
- Author
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Castro-Jorge LA, Siconelli MJL, Ribeiro BDS, Moraes FM, Moraes JB, Agostinho MR, Klein TM, Floriano VG, and Fonseca BALD
- Subjects
- Animals, Brazil epidemiology, Communicable Diseases, Emerging epidemiology, Communicable Diseases, Emerging transmission, Epidemics, Humans, West Nile Fever epidemiology, West Nile Fever transmission
- Abstract
Emerging arthropod-borne viruses (arboviruses), such as chikungunya and Zika viruses, are a major threat to public health in countries like Brazil where biodiversity is high and medical care is sometimes precarious. West Nile fever is a disease caused by the West Nile Virus (WNV), an RNA virus belonging to the Flaviviridae family. It is transmitted by infected mosquitoes to numerous animals like birds, reptiles and mammals, including human and non-human primates. In the last decade, the number of reported cases of WNV infection in humans and animals has increased in the Americas. Circulation of WNV in forests and rural areas in Brazil has been detected based on serological surveys and, in 2014, the first case of West Nile fever was confirmed in a patient from Piauí State. In 2018, the virus was isolated for the first time from a horse from a rural area in the state of Espírito Santo presenting with a neurological disorder; this raises the possibility that other cases of WNV encephalitis may have occurred without clinical recognition and without laboratory diagnosis by specific assays. The imminent WNV outbreak poses a challenge for Brazilian clinicians and researchers. In this review, we summarize the basic biological and ecological characteristics of this virus and the clinical presentation and treatment of febrile illnesses caused by WNV. We also discuss the epidemiological aspects, prophylaxis of WNV infections, and monitoring strategies that could be applied in the possibility of a WNV outbreak in Brazil.
- Published
- 2019
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45. Searching for the best real-time RT-PCRs to detect Zika virus infections: the importance of comparing several protocols.
- Author
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de Moraes FM, Espósito DLA, Klein TM, and da Fonseca BAL
- Subjects
- Clinical Protocols, Coinfection, Humans, Real-Time Polymerase Chain Reaction, Reverse Transcriptase Polymerase Chain Reaction, Sensitivity and Specificity, Chikungunya Fever diagnosis, Dengue diagnosis, RNA, Viral genetics, Zika Virus genetics, Zika Virus Infection diagnosis
- Abstract
Clinical manifestations of Zika, dengue, and chikungunya virus infections are very similar, making it difficult to reach a diagnosis based only on clinical grounds. In addition, there is an intense cross-reactivity between antibodies directed to Zika virus and other flaviviruses, and an accurate Zika diagnosis is best achieved by real-time RT-PCR. However, some real-time RT-PCR show better performance than others. To reach the best possible Zika diagnosis, the analytic sensitivity of some probe-based real-time RT-PCR amplifying Zika virus RNA was evaluated in spiked and clinical samples. We evaluated primers and probes to detect Zika virus, which had been published before, and tested sensitivity using serum spiked and patient samples by real-time RT-PCR. When tested against spiked samples, the previously described primers showed different sensitivity, with very similar results when samples from patients (serum and urine) were analyzed. Real-time RT-PCR designed to amplify Zika virus NS1 showed the best analytical sensitivity for all samples.
- Published
- 2018
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46. Comparison of effectiveness of 5'-regulatory sequences in transplastomic tobacco chloroplasts.
- Author
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Gerasymenko IM, Sheludko YV, Klebanovych AA, Rudas VA, Shakhovsky AM, Klein TM, and Kuchuk NV
- Subjects
- Arabidopsis genetics, Gene Expression Regulation, Plant, Genes, Reporter, Glucuronidase genetics, Medicago truncatula genetics, NADH Dehydrogenase genetics, Phaseolus genetics, Plant Proteins genetics, Plastids metabolism, Ribulose-Bisphosphate Carboxylase genetics, Nicotiana genetics, Nicotiana growth & development, Chloroplasts genetics, Plants, Genetically Modified genetics, Plastids genetics, Promoter Regions, Genetic
- Abstract
The development of tools which ensure the desired level of transgene expression in plastids is a prerequisite for the effective utilization of these plant organelles for the deployment of bioactive proteins. High-level accumulation of target proteins is considered as a positive feature of transplastomic plants, but excessive accumulation of foreign proteins may have deleterious effects on host plants. On the other hand, expression at low levels can result in ineffective phenotypes. We compared the effectiveness of different 5'-regulatory sequences in driving the expression of a reporter gene, β-glucuronidase (uidA), in tobacco chloroplasts. To achieve varying expression levels, we have chosen heterologous 5'-regulatory sequences which either differ significantly from their homologous counterparts or depend on specific nuclear encoded factors. The Medicago truncatula psbA promoter/5'-UTR supported the highest levels of protein accumulation, surpassing the other tested sequences by two to three orders of magnitude. The heterologous regulatory sequence of Phaseolus vulgaris rbcL gene was as efficient in tobacco chloroplasts as the corresponding homologous promoter/5'-UTR. The Arabidopsis thaliana ndhF promoter/5'-UTR supported as high reporter activity levels as the rbcL 5'-sequences, whereas the effectiveness of A. thaliana psbN promoter/5'-UTR was three fold lower. The characterized regulatory sequences can be utilized to establish transplastomic lines with desirable levels of target protein accumulation. The ability to control transgene expression should be useful for achieving appropriate levels of protein accumulation and thereby avoid their negative impacts on host plant physiology.
- Published
- 2017
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47. Mirabegron for the treatment of overactive bladder: cost-effectiveness from US commercial health-plan and Medicare Advantage perspectives.
- Author
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Wielage RC, Perk S, Campbell NL, Klein TM, Posta LM, Yuran T, Klein RW, and Ng DB
- Subjects
- Cost-Benefit Analysis, Economics, Pharmaceutical, Female, Humans, Male, Markov Chains, United States, Urinary Incontinence drug therapy, Acetanilides economics, Acetanilides therapeutic use, Medicare Part C, Muscarinic Antagonists economics, Muscarinic Antagonists therapeutic use, Thiazoles economics, Thiazoles therapeutic use, Urinary Bladder, Overactive drug therapy, Urological Agents economics, Urological Agents therapeutic use
- Abstract
Background and Objective: The first class of oral pharmacologic treatments for overactive bladder (OAB) are antimuscarinics that are associated with poor persistence, anticholinergic adverse events, and increased anticholinergic burden (ACB) with risk of cognitive impairment. Mirabegron, a β3-adrenoceptor agonist, is an oral treatment that does not contribute to ACB and has early evidence of improved persistence. The objective of the analysis was to assess the cost-effectiveness of mirabegron for OAB vs six antimuscarinics in the US., Methods: A Markov state-transition model assessed US commercial health-plan and Medicare Advantage perspectives over a 3-year time horizon in an OAB patient population. Transition probabilities between five micturition and five incontinence severity states were derived from a network meta-analysis of 44 trials of oral OAB treatments. Therapy beginning with an oral OAB agent could discontinue or switch to another oral agent and could be followed by tibial nerve stimulation, sacral neuromodulation, or onabotulinumtoxinA. The primary outcome was cost per quality-adjusted life year (QALY). Utilities were mapped from incontinence and micturition frequencies as well as demographics. Based on analysis of data from a large healthcare system, elevated ACB was associated with increased healthcare utilization and probability of cognitive impairment., Results: From both commercial and Medicare Advantage perspectives, mirabegron was the most clinically effective treatment, while oxybutynin was the least expensive. Tolterodine immediate release (IR) was also on the cost-effectiveness frontier. The analysis estimated costs per QALY of $59,690 and $66,347 for mirabegron from commercial health plan and Medicare Advantage perspectives, respectively, compared to tolterodine IR. Other antimuscarinics were dominated., Conclusions: This analysis estimated that mirabegron is a cost-effective treatment for OAB from US commercial health plan and Medicare Advantage perspectives, due to fewer projected adverse events and comorbidities, and data suggesting better persistence.
- Published
- 2016
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48. Estimated Budget Impact of Increased Use of Mirabegron, A Novel Treatment for Overactive Bladder.
- Author
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Perk S, Wielage RC, Campbell NL, Klein TM, Perkins A, Posta LM, Yuran T, Klein RW, and Ng DB
- Subjects
- Acetanilides therapeutic use, Adult, Aged, Aged, 80 and over, Humans, Insurance, Health economics, Insurance, Health trends, Medicare Part C economics, Medicare Part C trends, Middle Aged, Muscarinic Antagonists economics, Muscarinic Antagonists therapeutic use, Thiazoles therapeutic use, Treatment Outcome, United States epidemiology, Urinary Bladder, Overactive drug therapy, Urinary Bladder, Overactive epidemiology, Urological Agents therapeutic use, Acetanilides economics, Budgets trends, Health Care Costs trends, Thiazoles economics, Urinary Bladder, Overactive economics, Urological Agents economics
- Abstract
Background: Oral pharmacological treatment for overactive bladder (OAB) consists of antimuscarinics and the beta-3 adrenergic agonist mirabegron. Antimuscarinic adverse events (AEs) such as dry mouth, constipation, and blurry vision can result in frequent treatment discontinuation rates, leaving part of the OAB population untreated. Antimuscarinics also contribute to a patient's anticholinergic cognitive burden (ACB), so the Beers Criteria recommends cautious use of antimuscarinics in elderly patients who take multiple anticholinergic medications or have cognitive impairment. Since mirabegron does not affect the cholinergic pathways, it is unlikely to contribute to a patient's ACB., Objective: To estimate the health care costs associated with the pharmacological treatment of OAB with mirabegron and antimuscarinics from U.S. commercial payer and Medicare Advantage perspectives, using a budget impact model., Methods: For this budget impact model, 2 analyses were performed. The primary analysis estimated the budgetary impact of increasing the use of mirabegron in a closed patient cohort treated with oral pharmacological treatments. The secondary analysis modeled the economic impact in an open cohort by allowing untreated patients to begin treatment with mirabegron after potential contraindication, intolerance, or lack of effectiveness of antimuscarinics. The analyses were performed over a 3-year time horizon. The economic impact of increased mirabegron use was quantified using direct medical costs, including prescription costs and health resource utilization (HRU) costs. Costs of comorbidities included pharmacy and medical costs of treating OAB-related urinary tract infections (UTI), skin rashes, and depression. An analysis of a large single-site integrated health network database was commissioned to quantify ACB-related HRU in terms of the increases in yearly outpatient and emergency department visits. Based on this analysis, the model associated each unit increase in ACB score with increased HRU and probability of mild cognitive impairment. Clinical outcomes of increased use of mirabegron were presented as the number of AEs and comorbidity episodes that could be avoided. One-way sensitivity analyses were performed to quantify the expected budget impact over the range of uncertainty for the key input variables., Results: Primary analysis calculated the impact of increasing the use of mirabegron from 4.5% to 5.3%, 7.1%, and 9.4% in years 1, 2, and 3, respectively, among oral pharmacological OAB treatments that included generic and branded antimuscarinics: oxybutynin, tolterodine, trospium, darifenacin, fesoterodine, and solifenacin. For a 1 million-member U.S. commercial payer plan, the total prescription costs increased, and the total medical costs decreased during the 3-year time horizon, yielding increases of $0.005, $0.016, and $0.031 from current per member per month (PMPM) costs and $0.90, $2.92, and $5.53 from current per treated member per month (PTMPM) costs, an average of less than 2% of current OAB treatment costs. For the Medicare Advantage plan, the resulting incremental PMPM costs were $0.010, $0.034, and $0.065, and the incremental PTMPM costs were $0.93, $3.04, and $5.76; all were less than 4% of the current cost. The secondary analysis estimated the budgetary effects of reducing the untreated population by 1% annually by initiating treatment with mirabegron. For a commercial payer, this resulted in PMPM cost increases of $0.156, $0.311, and $0.467 from the current value, while the incremental PTMPM cost increased by $6.17, $11.67, and $16.61. For the Medicare Advantage plan, the incremental increases in PMPM costs were $0.277, $0.553, and $0.830, and in PTMPM costs were $6.42, $12.15, and $17.29. Clinically, treating more OAB patients resulted in fewer OAB-related comorbidities from both health plan perspectives, since most events associated with nontreatment could be avoided. In the Medicare Advantage population of the secondary analysis, the total numbers of avoided events were predicted as 452 UTIs, 2,598 depression diagnoses, and 3,020 skin rashes during the time horizon of the model., Conclusions: Mirabegron addresses an unmet need for therapy for certain OAB patients, for whom antimuscarinics are not recommended because of a risk of cognitive impairment and who are intolerant to the anticholinergic AEs. Using mirabegron involves moderate additional economic cost to a commercial or Medicare Advantage health plan for which medical cost savings can offset a substantial part of increased pharmacy costs., Disclosures: Funding for this study was provided by Astellas. Perk, Wielage, T. Klein, and R. Klein are employed by Medical Decision Modeling, a contract research company that was paid to perform the described outcomes research and build the model contained in this study. Campbell and Perkins are employed by the Regenstrief Institute, which conducted a database analysis for this research. Campbell reports consultancy fees from Astellas, as well as pending grants from Merck, Sharpe, and Dohme Corp. Posta, Yuran, and Ng are employed by Astellas Pharma Global Development, the developer of mirabegron. Study concept and design were contributed by Perk, Wielage, R. Klein, and Ng. Campbell, T. Klein, and Perkins took the lead in data collection, assisted by Perk, Wielage, and Ng. Data interpretation was performed by Posta and Yuran, along with Perk, Wielage, R. Klein, Ng, Campbell, and Perkins. The manuscript was written by Perk and R. Klein, along with Wielage, T. Klein, Posta, Yuran, and Ng, and revised by all the authors.
- Published
- 2016
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- View/download PDF
49. Uveitis Associated with Zika Virus Infection.
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Furtado JM, Espósito DL, Klein TM, Teixeira-Pinto T, and da Fonseca BA
- Subjects
- Adult, DNA, Viral blood, Humans, Male, Polymerase Chain Reaction, Visual Acuity, Zika Virus genetics, Zika Virus isolation & purification, Uveitis virology, Zika Virus Infection complications
- Published
- 2016
- Full Text
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50. Outcomes in Severe Osteoporotic Women in Korea Using Sequential Treatment.
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Kim BR, Burge R, Klein TM, and Smolen LJ
- Published
- 2014
- Full Text
- View/download PDF
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