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637 results on '"Truong K"'

1. Does your robot know? Enhancing children's information retrieval through spoken conversation with responsible robots

Author

Beelen, T., Velner, E., Ordelman, R., Truong, K. P., Evers, V., and Huibers, T.

Subjects
Computer Science - Information Retrieval, Computer Science - Human-Computer Interaction, Computer Science - Robotics
Abstract

In this paper, we identify challenges in children's current information retrieval process, and propose conversational robots as an opportunity to ease this process in a responsible way. Tools children currently use in this process, such as search engines on a computer or voice agents, do not always meet their specific needs. The conversational robot we propose maintains context, asks clarifying questions, and gives suggestions in order to better meet children's needs. Since children are often too trusting of robots, we propose to have the robot measure, monitor and adapt to the trust the child has in the robot. This way, we hope to induce a critical attitude with the children during their information retrieval process., Comment: IR4Children'21 workshop at SIGIR 2021 - http://www.fab4.science/IR4C/

Published
2021

2. Enlarging the magnetocaloric operating window of the Dy2NiMnO6 double perovskite

Author

Balli, M., Mansouri, S., Fournier, P., Jandl, S., Truong, K. D., Khlifa, S. Khadechi-Haj, de Rango, P., Fruchart, D., and Kedous-Lebouc, A.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Other Condensed Matter
Abstract

In this paper, we mainly focus on the magnetic and magnetocaloric features of La2-xDyxNiMnO6 double perovskites. Their magnetocaloric properties are investigated in terms of both entropy and adiabatic temperature changes. In contrast to early works, it was found that the Dy2NiMnO6 compound unveils dominant antiferromagnetic interactions under very low magnetic fields. The ordering of its Dy3+ magnetic moments is associated with a giant magnetocaloric effect at very low temperatures, while the established ferromagnetic Ni-O-Mn super-exchange interactions close to 100 K give rise to a moderate magnetocaloric level, only. On the other hand, the doping of Dy2NiMnO6 with high amounts of large-size rare earth elements such as La would enable us to cover an unusually wide magnetocaloric temperature range going from the liquid helium temperature up to room-temperature. More interestingly, the presence of both ordered and disordered ferromagnetic phases in La1.5Dy0.5NiMnO6 maintains constant the isothermal entropy changes over a temperature span of about 200 K, being a favorable situation from a practical point of view., Comment: Accepted for publication in Journal of Physics: D, 2019

Published
2019
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4. Real‐world data on the efficacy and safety of hedgehog pathway inhibitors in patients with basal cell carcinoma: Experience of a tertiary Australian centre.

Author

Truong, K., Peera, M., Liu, R., Wijaya, M., Jones‐Caballero, M., Araujo, R. Ruiz, and Fernandez‐Penas, P.

Subjects
*STRUCTURED treatment interruption, *BASAL cell carcinoma, *HEDGEHOG signaling proteins, *SPASMS, *CELLULAR signal transduction
Abstract

Background Objectives Methods Results Conclusions Basal cell carcinomas (BCCs) are the most common cancers worldwide. Although most BCCs are amenable to local treatment, there are limited therapeutic options for surgically unresectable locally advanced and metastatic BCCs. Activation of the sonic hedgehog signalling pathway plays a significant role in the development of most BCCs. Hedgehog pathway inhibitors (HPIs) can be used to inhibit this pathway. Efficacy and safety data on HPI use in Australia is scarce.This study aims to present the effectiveness and safety of HPI at a tertiary dermatology referral centre.We conducted a retrospective analysis of the clinical charts of all patients with BCC treated with an HPI at a tertiary Dermatology referral centre in New South Wales, Australia from 1 January 2016 to 1 July 2023.Twenty‐three patients with BCCs were treated with an HPI; 11 locally advanced, 8 multiple, 3 basal cell naevus syndrome and 1 metastatic. All patients were of Caucasian background, with a median age of 56. Across 41 treatment cycles, the median treatment duration was 4 months. The overall response rate (ORR) was 20/23 (87%) and complete response (CR) rate was 9/23 (39%); patients treated with sonidegib achieved an ORR of 11/12 (92%) and CR of 4/12 (33%), and vismodegib‐treated patients achieved an ORR of 9/11 (82%) and CR of 5/11 (45%). Patients who responded to HPI treatment also responded to a subsequent HPI rechallenge. Common treatment emergent adverse events (TEAEs) included muscle spasms, dysgeusia and alopecia. Dysgeusia was more frequent with vismodegib than sonidegib (p = 0.0001). There was no evidence to suggest a difference in other TEAEs between the two HPIs. Four treatment cycles were stopped due to grade 3 muscle spasm.In our cohort of 23 patients being treated with HPI, the ORR was 87% and CR was 39%. All patients who experienced TEAEs and had a drug holiday successfully responded to HPI rechallenge. TEAEs, particularly muscle spasms, are common reasons for treatment cessation. Clinicians should implement strategies to mitigate TEAE to improve drug survivability. [ABSTRACT FROM AUTHOR]

Published
2024
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6. Oral Impacts on Daily Performances of Children 12 and 15-Year-Old in Can Tho City

Author

Do, H. G., Truong, K. N., Pham, D. H., Ngo, L. T. Quynh, Tran, H. T., Doan, N., Magjarevic, Ratko, Series Editor, Ładyżyński, Piotr, Associate Editor, Ibrahim, Fatimah, Associate Editor, Lackovic, Igor, Associate Editor, Rock, Emilio Sacristan, Associate Editor, Van Toi, Vo, editor, Le, Trung Quoc, editor, Ngo, Hoan Thanh, editor, and Nguyen, Thi-Hiep, editor

Published
2020
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8. Babbelbord: A Personalized Conversational Game for People with Dementia

Author

Nazareth, D. S., Burghardt, C., Capra, A., Cristoforetti, P., Lam, W., van Waterschoot, J. B., Westerhof, G. J., Truong, K. P., Barbosa, Simone Diniz Junqueira, Editorial Board Member, Filipe, Joaquim, Editorial Board Member, Ghosh, Ashish, Editorial Board Member, Kotenko, Igor, Editorial Board Member, Zhou, Lizhu, Editorial Board Member, Brankaert, Rens, editor, and IJsselsteijn, Wijnand, editor

Published
2019
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10. Utility of the inverse partial fluorescence for electronic structure studies of battery materials

Author

Wadati, H., Achkar, A. J., Hawthorn, D. G., Regier, T. Z., Singh, M. P., Truong, K. D., Fournier, P., Chen, G., Mizokawa, T., and Sawatzky, G. A.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons
Abstract

X-ray absorption spectroscopy (XAS) is one of the most widely used experimental techniques to study the electronic and spatial structure of materials. Fluorescence yield mode is bulk-sensitive, but has several serious problems coming from saturation effects. In this study, we show the usefulness of partial fluorescence yields in addressing these problems. We discuss the different behaviors of La2NiMnO6 and LiMnO2 at the Mn 2p absorption edges. The total fluorescence yield produces misleading spectra for LiMnO2 due to the absence of high-Z (Z: atomic number) elements. We conclude that the measurement of the inverse partial fluorescence yield is essential in studies of LiMnO2, which is a hotly debated Li-ion battery material., Comment: 3 pages, 3 figures

Published
2012
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11. Raman scattering study of delafossite magnetoelectric multiferroic compounds: CuFeO2 and CuCrO2

Author

Aktas, O., Truong, K. D., Otani, T., Balakrishnan, G., Clouter, M. J., Kimura, T., and Quirion, G.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Other Condensed Matter
Abstract

Ultrasonic velocity measurements on the magnetoelectric multiferroic compound CuFeO2 reveal that the antiferromagnetic transition observed at TN1 = 14 K might be induced by an R-3m -> C2/m pseudoproper ferroelastic transition (G. Quirion, M. J. Tagore, M. L. Plumer, O. A. Petrenko, Phys. Rev. B 77, 094111 (2008)). In that case, the group theory states that the order parameter associated with the structural transition must belong to a two dimensional irreducible representation Eg (x^2 - y^2, xy). Since this type of transition can be driven by a Raman Eg mode, we performed Raman scattering measurements on CuFeO2 between 5 K and 290 K. Considering that the isostructural multiferroic compound CuCrO2 might show similar structural deformations at the antiferromagnetic transition TN1 = 24.3 K, Raman measurements have also been performed for comparison. At ambient temperature, the Raman modes in CuFeO2 are observed at omega_Eg = 352 cm^-1 and omega_Ag = 692 cm^-1, while these modes are detected at omega_E_g = 457 cm^-1 and omega_Ag = 709 cm^-1 in CuCrO2. The analysis of the temperature dependence of modes shows that the frequency of all modes increases down to 5 K. This typical behavior can be attributed to anharmonic phonon-phonon interactions. These results clearly indicate that none of the Raman active modes observed in CuFeO2 and CuCrO2 drive the pseudoproper ferroelastic transition observed at the N\'eel temperature TN1. Finally, a broad band at about 550 cm^-1 observed in the magnetoelectric phase of CuCrO2 below TN2 could be attributed to a magnon mode., Comment: 11 pages, 5 figures

Published
2011
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12. Investigation of phonon behavior in Pr2NiMnO6 by micro-Raman spectroscopy

Author

Truong, K. D., Singh, M. P., Jandl, S., and Fournier, P.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons
Abstract

The temperature dependence of phonon excitations and the presence of spin phonon coupling in polycrystalline Pr2NiMnO6 samples were studied using micro-Raman spectroscopy and magnetometry. Magnetic properties show a single ferromagnetic-to-paramagnetic transition at 228 K and a saturation magnetization close to 4.95 \muB/f.u.. Three distinct Raman modes at 657, 642, and 511 cm-1 are observed. The phonon excitations show a clear hardening due to anharmonicity from 300 K down to 10 K. Further, temperature dependence of the 657 cm-1 mode shows only a small softening. This reflects the presence of a relatively weak spin-phonon coupling in Pr2NiMnO6 contrary to other double perovskites previously studied., Comment: 10 pages, 4 figs

Published
2011
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13. Phase formation, phonon behavior, and magnetic properties of novel ferromagnetic La3BAlMnO9 (B = Co or Ni) triple perovskites

Author

Singh, M. P., Truong, K. D., Jandl, S., and Fournier, P.

Subjects
Condensed Matter - Materials Science
Abstract

In the quest for novel magnetoelectric materials, we have grown, stabilized and explored the properties of La3BAlMnO9 (B = Co or Mn) thin films. In this paper, we report the influence of the growth parameters that promote B/Al/Mn ordering in the pseudo-cubic unit cell and their likely influence on the magnetic and multiferroic properties. The temperature dependence of the magnetization shows that La3CoAlMnO9 is ferromagnetic up to 190 K while La3NiAlMnO9 shows a TC of 130 K. The behavior of these films are compared and contrasted with related La2BMnO6 double perovskites. It is observed that the insertion of AlO6 octahedra between CoO6 and MnO6 suppresses significantly the strength of the superexchange interaction, spin-phonon and spin-polar coupling., Comment: 13 pages, 3 figs

Published
2010
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14. Multiferroic double perovskites: Opportunities, Issues and Challenges

Author

Singh, M. P., Truong, K. D., Jandl, S., and Fournier, P.

Subjects
Condensed Matter - Materials Science
Abstract

Despite the great technological and scientific importance, a well-controlled coupled behavior in magnetoelectric multiferroic materials at room temperature remains challenging. We demonstrate that the self-ordered A2BBO6 (e.g., A = La, B = Mn, and B = Ni) double perovskites provide a unique alternative opportunity to control and/or to induce such behavior in oxides. In this paper, we outline and discuss the various challenges and bottleneck issues related to this class of materials using La2NiMnO6 as a prototype. Details of the synthesis strategies, using pulsed laser deposition as a central tool, to obtain a meticulous control over cation ordering is illustrated. The possible impact of Ni/Mn cation ordering on the magnetic ground states, ferromagnetic transition temperature, phonon behavior, and spin-phonon coupling are presented. Our results are also compared with the current literature on related compounds., Comment: 12 pages, 3 figures

Published
2009
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15. Influence of Ni/Mn cation order on the spin-phonon coupling in multifunctional La2NiMnO6 epitaxial films by polarized Raman spectroscopy

Author

Truong, K. D., Singh, M. P., Jandl, S., and Fournier, P.

Subjects
Condensed Matter - Materials Science
Abstract

We report the influence of Ni/Mn ordering on the spin-phonon coupling in multifunctional La2NiMnO6. Three types of films with different levels of structural order, including long-range Ni/Mn cation order, cation disorder, and an admixture of the ordered and disordered phases, are compared by polarized micro-Raman spectroscopy and magnetometry. Each film displays a strong dependence on the polarization configuration and a unique set of Raman active phonon excitations. Long-range cation ordering results in the splitting of Raman active phonon peaks because of Brillouin zone folding and lowering symmetry. Phonon mode softening begins clearly at a distinct temperature for each sample revealing a strong spin-lattice interaction. It follows closely the magnetization curve in ordered films. Unlike the admixture and the ordered films, softening behavior is strongly suppressed in the cation-disordered films. These differences may be understood based on the variation in amplitude of the spin-spin correlation functions due to the local Ni/Mn cation ordering., Comment: 17 pages, 7 figs

Published
2009
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16. Long-range Ni/Mn structural order in epitaxial double perovskite La2NiMnO6 thin films

Author

Singh, M. P., Truong, K. D., Jandl, S., and Fournier, P.

Subjects
Condensed Matter - Materials Science
Abstract

We report and compare the structural, magnetic, and optical properties of ordered La2NiMnO6 thin films and its disordered LaNi0.5Mn0.5O3 counterpart. An x-ray diffraction study reveals that the B-site Ni/Mn ordering induces additional XRD reflections as the crystal symmetry is transformed from a pseudocubic perovskite unit cell in the disordered phase to a monoclinic form with larger lattice parameters for the ordered phase. Polarized Raman spectroscopy studies reveal that the ordered samples are characterized by additional phonon excitations that are absent in the disordered phase. The appearance of these additional phonon excitations is interpreted as the clearest signature of Brillouin zone folding as a result of the long-range Ni/Mn ordering in La2NiMnO6. Both ordered and disordered materials display a single ferromagnetic-to-paramagnetic transition. The ordered films display also a saturation magnetization close to 4.8 mB/f.u. and a transition temperature (FM-TC) around 270 K, while the disordered ones have only a 3.7 mB/f.u. saturation magnetization and a FM-TC around 138 K. The differences in their magnetic behaviours are understood based on the distinct local electronic configurations of their Ni/Mn cations., Comment: 15 pages, 5 figs

Published
2009
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17. Growth, magnetic properties and Raman scattering of La2NiMnO6 single crystals

Author

Iliev, M. N., Gospodinov, M. M., Singh, M. P., Meen, J., Truong, K. D., Fournier, P., and Jandl, S.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons
Abstract

Millimeter size single crystals of double perovskite La2NiMnO6 (LNMO) were grown by the High Temperature Solution Growth Method. The magnetic measurements and polarized Raman spectra between 5 and 350K provide evidence that the crystals have high degree of Ni(2+)/Mn(4+)ordering, small amount of lattice defects and highest Tc = 288K reported so far for ferromagnetic double perovskites. At a microscopic level the crystals are heavily twinned and the effect of twinning on the Raman spectra is analyzed in detail., Comment: 5 pages, 4 figures

Published
2009

18. A radical approach to promote multiferroic coupling in double perovskites

Author

Singh, M. P., Truong, K. D., Fournier, P., Rauwel, P., Rauwel, E., Carignan, L. P., and Menard, D.

Subjects
Condensed Matter - Materials Science
Abstract

Double perovskites provide a unique opportunity to induce and control multiferroic behaviors in oxide systems. The appealing possibility to design materials with a strong coupling between the magnetization and the polarization fields may be achieved in this family since these magnetic insulators can present structural self-ordering in the appropriate growth conditions. We have studied the functional properties of La2CoMnO6 and Bi2CoMnO6 epitaxial thin films grown by pulsed laser deposition. Cation-ordered La2CoMnO6 films display a magnetic Curie temperature of 250 K while cation-disordered Bi2CoMnO6 films present ferromagnetism up to ~ 800 K. Such high transition temperature for magnetic ordering can be further tuned by varying the strain in the films indicating an important contribution from the structural characteristics of the materials. Our approach might be generalized for other oxide systems. At this end, our results are compared with other multiferroic systems. The roles of various cations, their arrangements and structural effects are further discussed., Comment: 12 pages, 5 figs

Published
2009
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19. Stabilization and functional properties of La3NiAlMnO9 and La3CoAlMnO9 magnetoelectric triple perovskites

Author

Singh, M. P., Truong, K. D., Jandl, S., and Fournier, P.

Subjects
Condensed Matter - Materials Science
Abstract

Ferromagnetic La3NiAlMnO9 (LNAMO) and La3CoAlMnO9 (LCAMO) triple-perovskite thin films are stabilized in the 750-860 oC temperature range in 100 to 900 mTorr O2 pressure range using pulsed-laser deposition. The LCAMO and LNAMO films exhibit ferromagnetism up to 190 K and 130 K respectively. The structural, optical and magnetic properties of these films demonstrate that the B-site 3d-cations, Al, Mn and Co or Ni ions, are structurally short-range ordered. The strong spin-lattice-polarization coupling in LCAMO is evidenced by the temperature dependence of the dielectric constant and the softening of the phonon frequencies starting in the vicinity of the ferromagnetic-to-paramagnetic phase transition mimicking the behaviours of La2CoMnO6 double perovskite., Comment: 11 pages, 4 figs

Published
2009
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20. Mott Transition, Compressibility Divergence and P-T Phase Diagram of Layered Organic Superconductors: An Ultrasonic Investigation

Author

Fournier, D., Poirier, M., Castonguay, M., and Truong, K.

Subjects
Condensed Matter - Strongly Correlated Electrons
Abstract

The phase diagram of the organic superconductor $\kappa$-(BEDT-TTF)$_2$Cu[N(CN)$_2$Cl has been investigated by ultrasonic velocity measurements under helium gas pressure. Different phase transitions were identified trough several elastic anomalies characterized from isobaric and isothermal sweeps. Our data reveal two crossover lines that end on the critical point terminating the first-order Mott transition line. When the critical point is approached along these lines, we observe a dramatic softening of the velocity which is consistent with a diverging compressibility of the electronic degrees of freedom., Comment: 4 pages, 5 figures

Published
2002
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21. Elastic Study of Antiferromagnetic Fluctuations in the Layered Organic Superconductors kappa-(BEDT-TTF)_2X

Author

Frikach, K., Poirier, M., Castonguay, M., and Truong, K. D.

Subjects
Condensed Matter - Superconductivity
Abstract

In an ultrasonic experiment, we have investigated the temperature profile of the velocity of longitudinal elastic waves propagating along a direction perpendicular to the layers in the organic superconductors kappa-(BEDT-TTF)_2X, X = Cu(SCN)_2 and Cu[N(CN)_2]Br. Although a small decrease of the velocity is observed at the superconducting transition, the most anomalous behavior is obtained in the normal metallic state where an important softening is identified around 40-50 K. In order to characterize the origin of this anomaly, we have studied its behavior under the application of hydrostatic pressure. The observed behavior is found to mimic those of the transport and magnetic properties of these materials which have been attributed to the magnetic fluctuations. Following the example of one-dimensional insulating systems where coupling between longitudinal acoustic waves and magnetic fluctuations is known to occur, our results suggest that the pseudo-gap regime of these two-dimensional organic superconductors is dominated by a similar mechanism., Comment: 4 pages including 4 figures

Published
1999
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28. Acoustic speech markers for schizophrenia-spectrum disorders: a diagnostic and symptom-recognition tool

Author

Boer, J. N. de, Voppel, A. E., Brederoo, S. G., Schnack, H. G., Truong, K. P., Wijnen, F. N. K., Sommer, I. E. C., Boer, J. N. de, Voppel, A. E., Brederoo, S. G., Schnack, H. G., Truong, K. P., Wijnen, F. N. K., and Sommer, I. E. C.

Abstract

Background Clinicians routinely use impressions of speech as an element of mental status examination. In schizophrenia-spectrum disorders, descriptions of speech are used to assess the severity of psychotic symptoms. In the current study, we assessed the diagnostic value of acoustic speech parameters in schizophrenia-spectrum disorders, as well as its value in recognizing positive and negative symptoms. Methods Speech was obtained from 142 patients with a schizophrenia-spectrum disorder and 142 matched controls during a semi-structured interview on neutral topics. Patients were categorized as having predominantly positive or negative symptoms using the Positive and Negative Syndrome Scale (PANSS). Acoustic parameters were extracted with OpenSMILE, employing the extended Geneva Acoustic Minimalistic Parameter Set, which includes standardized analyses of pitch (F0), speech quality and pauses. Speech parameters were fed into a random forest algorithm with leave-ten-out cross-validation to assess their value for a schizophrenia-spectrum diagnosis, and PANSS subtype recognition. Results The machine-learning speech classifier attained an accuracy of 86.2% in classifying patients with a schizophrenia-spectrum disorder and controls on speech parameters alone. Patients with predominantly positive v. negative symptoms could be classified with an accuracy of 74.2%. Conclusions Our results show that automatically extracted speech parameters can be used to accurately classify patients with a schizophrenia-spectrum disorder and healthy controls, as well as differentiate between patients with predominantly positive v. negatives symptoms. Thus, the field of speech technology has provided a standardized, powerful tool that has high potential for clinical applications in diagnosis and differentiation, given its ease of comparison and replication across samples.

Published
2023

41. Global temporal changes in the proportion of children with advanced disease at the start of combination antiretroviral therapy in an era of changing criteria for treatment initiation

Author

Panayidou, K, Davies, M, Anderegg, N, Egger, M, Fatti, G, Vinikoor, M, Sawry, S, Ehmer, J, Eley, B, Phiri, S, Technau, K, Chimbetete, C, Rabie, H, Boulle, A, Tanser, F, Wood, R, Wools-Kaloustian, K, Vreeman, R, Oyaro, P, Ayaya, S, Nakigozi, G, Musick, B, Yiannoutsos, C, Amorissani-Folquet, M, Takassi, E, Sylla, M, Renner, L, Malateste, K, Desmonde, S, Leroy, V, Kurniati, N, Hansudewechakul, R, Nguyen, L, Ly, P, Truong, K, Kariminia, A, Sohn, A, Edmonds, A, Yumo, H, Dusingize, J, Yotebieng, M, Judd, A, Rojo, P, Smit, C, Grabar, S, Warszwarski, J, Chene, G, Raban, D, Patel, K, Seage, G, Van Dyke, R, Oleske, J, Williams, P, Abzug, M, Succi, R, Machado, D, Pinto, J, Rouzier, V, Luque, M, Mejia, F, Khol, V, Tucker, J, Kumarasamy, N, Saghayam, S, Chandrasekaran, E, Wati, D, Vedaswari, D, Malino, I, Muktiarti, D, Fong, S, Lim, M, Daut, F, Nik Yusoff, N, Mohamad, P, Mohamed, T, Drawis, M, Nallusamy, R, Chan, K, Sudjaritruk, T, Sirisanthana, V, Aurpibul, L, Oberdorfer, P, Denjanta, S, Watanaporn, S, Kongphonoi, A, Lumbiganon, P, Kosalaraksa, P, Tharnprisan, P, Udomphanit, T, Jourdain, G, Puthanakit, T, Anugulruengkitt, S, Phadungphon, C, Chokephaibulkit, K, Lapphra, K, Phongsamart, W, Sricharoenchai, S, Du, Q, Nguyen, C, Do, V, Ha, T, An, V, Khu, D, Pham, A, Le, O, Ross, J, Sethaputra, C, Law, M, Cahn, P, Cesar, C, Fink, V, Sued, O, Dell'Isola, E, Perez, H, Valiente, J, Yamamoto, C, Grinsztejn, B, Veloso, V, Luz, P, de Boni, R, Wagner, S, Friedman, R, Moreira, R, Ferreira, F, Maia, M, de Menezes Succi, R, Barbosa Gouv E A, A, Wolff, M, Cortes, C, Rodriguez, M, Allendes, G, Pape, J, Marcelin, A, Perodin, C, Padgett, D, Madero, J, Ramirez, B, Belaunzaran, P, Vega, Y, Gotuzzo, E, Carriquiry, G, Mcgowan, C, Shepherd, B, Sterling, T, Jayathilake, K, Person, A, Rebeiro, P, Giganti, M, Castilho, J, Duda, S, Maruri, F, Vansell, H, P E Lagie, N, Gateretse, P, Munezero, J, Nitereka, V, Niyongabo, T, Twizere, C, Bukuru, H, Nahimana, T, Biziragusenyuka, J, Manyundo, R, Atsu, K, Mbuh, T, Ajeh, R, Benwi, M, Dzudie, A, Mbuh, A, Ngamani, M, Nkome, V, Amadou, D, Ngassam, E, Pefura Yone, E, Ewanoge, A, Fuhngwa, N, Moki, C, Akele, C, Kitetele, F, Lelo, P, Tabala, M, Okitolonda, E, Wenzi, L, Diafouka, M, Ekat, M, Nsonde, D, Mafou, A, Ntarambirwa, F, Tuyishimire, Y, Hakizimana, T, Ayinkamiye, J, Mukantwali, S, Kayitesi, H, Uwamahoro, O, Habumuremyi, V, Mukamana, J, Kubwimana, G, Mugenzi, P, Muhoza, B, Munyaneza, A, Ndahiro, E, Nyiransabimana, D, D'Amour Sinayobye, J, Sugira, V, Benekigeri, C, Mbaraga, G, Adedimeji, A, Anastos, K, Dilorenzo, M, Murchison, L, Addison, D, Baker, M, Brazier, E, Jones, H, Kelvin, E, Kulkarni, S, Nash, D, Tymejczyk, O, Elul, B, Cai, X, Hoover, D, Kim, H, Li, C, Shi, Q, Lancaster, K, Kuniholm, M, Parcesepe, A, Kimmel, A, Mcnairy, M, Diero, L, Plus, A, Bukusi, E, Ssali, J, Nalugoda, F, Somi, G, Lyamuya, R, Ngonyani, K, Lugina, E, Urassa, M, Michael, D, Zannou, M, Poda, A, Sarfo, F, Messou, E, Chenal, H, Minga, K, Bissagnene, E, Tanon, A, Seydi, M, Patassi, A, Koumakpai-Adeothy, S, N'Gbeche, S, Bosse, C, Kouakou, K, Folquet, M, Eboua, F, Traore, F, Dabis, F, Arrive, E, Balestre, E, Becquet, R, Bernard, C, Arikawa, S, Doring, A, Jaquet, A, Rabourdin, E, Tiendrebeogo, T, Jesson, J, Ekouevi, D, Azani, J, Coffi E, P, Gnepa, G, Kouadio, C, Tchounga, B, Maartens, G, Lettow, M, Muhairwe, J, Jores, A, Kamenova, K, Fox, M, Prozesky, H, Zangerle, R, Touloumi, G, Warszawski, J, Meyer, L, Krause, M, Ghosn, J, Leport, C, Wittkop, L, Reiss, P, Wit, F, Prins, M, Bucher, H, Gibb, D, Fatkenheuer, G, Del Amo, J, Obel, N, Thorne, C, Mocroft, A, Kirk, O, Stephan, C, Perez-Hoyos, S, Hamouda, O, Bartmeyer, B, Chkhartishvili, N, Noguera-Julian, A, Antinori, A, D'Arminio Monforte, A, Brockmeyer, N, Prieto, L, Conejo, P, Soriano-Arandes, A, Battegay, M, Kouyos, R, Mussini, C, Tookey, P, Casabona, J, Miro, J, Castagna, A, Konopnick, D, Goetghebuer, T, Sonnerborg, A, Torti, C, Sabin, C, Teira, R, Garrido, M, Haerry, D, de Wit, S, Costagliola, D, Raben, D, Barger, D, Schwimmer, C, Termote, M, Campbell, M, Frederiksen, C, Friis-Moller, N, Kjaer, J, Brandt, R, Berenguer, J, Bohlius, J, Bouteloup, V, Cozzi-Lepri, A, Dorrucci, M, Dunn, D, Furrer, H, Guiguet, M, Lambotte, O, Lodi, S, Matheron, S, Monge, S, Nakagawa, F, Paredes, R, Phillips, A, Puoti, M, Rohner, E, Schomaker, M, Sterne, J, Thiebaut, R, van der Valk, M, Hazra, R, Heckman, B, O'Gara, E, Siminski, S, Panayidou K., Davies M. -A., Anderegg N., Egger M., Fatti G., Vinikoor M., Sawry S., Ehmer J., Eley B., Phiri S., Technau K. -G. u. N., Chimbetete C., Rabie H., Boulle A., Tanser F., Wood R., Wools-Kaloustian K., Vreeman R., Oyaro P., Ayaya S., Nakigozi G., Musick B., Yiannoutsos C., Amorissani-Folquet M., Takassi E., Sylla M., Renner L., Malateste K., Desmonde S., Leroy V., Kurniati N., Hansudewechakul R., Nguyen L. V., Ly P. S., Truong K. H., Kariminia A., Sohn A. H., Edmonds A., Yumo H. A., Dusingize J. C., Yotebieng M., Judd A., Rojo P., Smit C., Grabar S., Warszwarski J., Chene G., Raban D., Patel K., Seage G. R., Van Dyke R. B., Oleske J., Williams P. L., Abzug M. J., Succi R., Machado D. M., Pinto J., Rouzier V., Luque M., Mejia F., Khol V., Tucker J., Kumarasamy N., Saghayam S., Chandrasekaran E., Wati D. K., Vedaswari D., Malino I. Y., Muktiarti D., Fong S. M., Lim M., Daut F., Nik Yusoff N. K., Mohamad P., Mohamed T. J., Drawis M. R., Nallusamy R., Chan K. C., Sudjaritruk T., Sirisanthana V., Aurpibul L., Oberdorfer P., Denjanta S., Watanaporn S., Kongphonoi A., Lumbiganon P., Kosalaraksa P., Tharnprisan P., Udomphanit T., Jourdain G., Puthanakit T., Anugulruengkitt S., Phadungphon C., Chokephaibulkit K., Lapphra K., Phongsamart W., Sricharoenchai S., Du Q. T., Nguyen C. H., Do V. C., Ha T. M., An V. T., Khu D. T. K., Pham A. N., Nguyen L. T., Le O. N., Ross J. L., Sethaputra C., Law M. G., Cahn P., Cesar C., Fink V., Sued O., Dell'isola E., Perez H., Valiente J., Yamamoto C., Grinsztejn B., Veloso V., Luz P., de Boni R., Wagner S. C., Friedman R., Moreira R., Ferreira F., Maia M., de Menezes Succi R. C., Barbosa Gouv E A A. F. a. T., Wolff M., Cortes C., Rodriguez M. F., Allendes G., Pape J. W., Marcelin A., Perodin C., Luque M. T., Padgett D., Madero J. S., Ramirez B. C., Belaunzaran P., Vega Y. C., Gotuzzo E., Carriquiry G., McGowan C. C., Shepherd B. E., Sterling T., Jayathilake K., Person A. K., Rebeiro P. F., Giganti M., Castilho J., Duda S. N., Maruri F., Vansell H., P E Lagie N., Gateretse P., Munezero J., Nitereka V., Niyongabo T., Twizere C., Bukuru H., Nahimana T., Biziragusenyuka J., Manyundo R. S., Atsu K., Mbuh T., Ajeh R., Benwi M., Dzudie A., Mbuh A., Ngamani M. L., Nkome V., Amadou D., Ngassam E., Pefura Yone E. W., Ewanoge A. N., Fuhngwa N., Moki C., Akele C., Kitetele F., Lelo P., Tabala M., Okitolonda E. W., Wenzi L., Diafouka M., Ekat M. H., Nsonde D. M., Mafou A., Ntarambirwa F., Tuyishimire Y., Hakizimana T., Ayinkamiye J., Mukantwali S., Kayitesi H., Uwamahoro O., Habumuremyi V., Mukamana J., Kubwimana G., Mugenzi P., Muhoza B., Munyaneza A., Ndahiro E., Nyiransabimana D., D'Amour Sinayobye J., Sugira V., Benekigeri C., Mbaraga G., Adedimeji A., Anastos K., Dilorenzo M., Murchison L., Ross J., Addison D., Baker M., Brazier E., Jones H., Kelvin E., Kulkarni S., Nash D., Tymejczyk O., Elul B., Cai X., Hoover D., Kim H. -Y., Li C., Shi Q., Lancaster K., Kuniholm M., Parcesepe A., Duda S., Kimmel A., McNairy M., Diero L., Plus A. M. P. A. T. H., Bukusi E., Ssali J., Nalugoda F., Somi G. R., Lyamuya R. E., Ngonyani K., Lugina E., Urassa M., Michael D., Zannou M. D., Poda A., Sarfo F. S., Messou E., Chenal H., Minga K. A., Bissagnene E., Tanon A., Seydi M., Patassi A. A., Koumakpai-Adeothy S. A., Renner L. A., N'gbeche S. M., Bosse C. A., Kouakou K., Folquet M. A., Eboua F. c. O. T., Traore F. D., Dabis F. c. O., Arrive E., Balestre E., Becquet R., Bernard C., Arikawa S. C., Doring A., Jaquet A., Rabourdin E., Tiendrebeogo T., Jesson J., Ekouevi D. K., Azani J. -C., Coffi E P., Gnepa G., Kouadio C. G. K., Tchounga B., Maartens G., Lettow M. V., Muhairwe J., Jores A., Kamenova K., Fox M. P., Prozesky H., Zangerle R., Touloumi G., Warszawski J., Meyer L., Krause M. M., Ghosn J., Leport C., Wittkop L., Reiss P., Wit F., Prins M., Bucher H., Gibb D., Fatkenheuer G., Del Amo J., Obel N., Thorne C., Mocroft A., Kirk O., Stephan C., Perez-Hoyos S., Hamouda O., Bartmeyer B., Chkhartishvili N., Noguera-Julian A., Antinori A., D'Arminio Monforte A., Brockmeyer N., Prieto L., Conejo P. R., Soriano-Arandes A., Battegay M., Kouyos R., Mussini C., Tookey P., Casabona J., Miro J. M., Castagna A., Konopnick D., Goetghebuer T., Sonnerborg A., Torti C., Sabin C., Teira R., Garrido M., Haerry D., de Wit S., Costagliola D., Raben D., Barger D., Schwimmer C., Termote M., Campbell M., Frederiksen C. M., Friis-Moller N., Kjaer J., Brandt R. S., Berenguer J., Bohlius J., Bouteloup V., Cozzi-Lepri A., Dorrucci M., Dunn D., Furrer H., Guiguet M., Lambotte O., Lodi S., Matheron S., Miro J. M. ª., Monge S., Nakagawa F., Paredes R., Phillips A., Puoti M., Rohner E., Schomaker M., Sterne J., Thiebaut R., van der Valk M., Hazra R., Heckman B., O'gara E., Siminski S., Panayidou, K, Davies, M, Anderegg, N, Egger, M, Fatti, G, Vinikoor, M, Sawry, S, Ehmer, J, Eley, B, Phiri, S, Technau, K, Chimbetete, C, Rabie, H, Boulle, A, Tanser, F, Wood, R, Wools-Kaloustian, K, Vreeman, R, Oyaro, P, Ayaya, S, Nakigozi, G, Musick, B, Yiannoutsos, C, Amorissani-Folquet, M, Takassi, E, Sylla, M, Renner, L, Malateste, K, Desmonde, S, Leroy, V, Kurniati, N, Hansudewechakul, R, Nguyen, L, Ly, P, Truong, K, Kariminia, A, Sohn, A, Edmonds, A, Yumo, H, Dusingize, J, Yotebieng, M, Judd, A, Rojo, P, Smit, C, Grabar, S, Warszwarski, J, Chene, G, Raban, D, Patel, K, Seage, G, Van Dyke, R, Oleske, J, Williams, P, Abzug, M, Succi, R, Machado, D, Pinto, J, Rouzier, V, Luque, M, Mejia, F, Khol, V, Tucker, J, Kumarasamy, N, Saghayam, S, Chandrasekaran, E, Wati, D, Vedaswari, D, Malino, I, Muktiarti, D, Fong, S, Lim, M, Daut, F, Nik Yusoff, N, Mohamad, P, Mohamed, T, Drawis, M, Nallusamy, R, Chan, K, Sudjaritruk, T, Sirisanthana, V, Aurpibul, L, Oberdorfer, P, Denjanta, S, Watanaporn, S, Kongphonoi, A, Lumbiganon, P, Kosalaraksa, P, Tharnprisan, P, Udomphanit, T, Jourdain, G, Puthanakit, T, Anugulruengkitt, S, Phadungphon, C, Chokephaibulkit, K, Lapphra, K, Phongsamart, W, Sricharoenchai, S, Du, Q, Nguyen, C, Do, V, Ha, T, An, V, Khu, D, Pham, A, Le, O, Ross, J, Sethaputra, C, Law, M, Cahn, P, Cesar, C, Fink, V, Sued, O, Dell'Isola, E, Perez, H, Valiente, J, Yamamoto, C, Grinsztejn, B, Veloso, V, Luz, P, de Boni, R, Wagner, S, Friedman, R, Moreira, R, Ferreira, F, Maia, M, de Menezes Succi, R, Barbosa Gouv E A, A, Wolff, M, Cortes, C, Rodriguez, M, Allendes, G, Pape, J, Marcelin, A, Perodin, C, Padgett, D, Madero, J, Ramirez, B, Belaunzaran, P, Vega, Y, Gotuzzo, E, Carriquiry, G, Mcgowan, C, Shepherd, B, Sterling, T, Jayathilake, K, Person, A, Rebeiro, P, Giganti, M, Castilho, J, Duda, S, Maruri, F, Vansell, H, P E Lagie, N, Gateretse, P, Munezero, J, Nitereka, V, Niyongabo, T, Twizere, C, Bukuru, H, Nahimana, T, Biziragusenyuka, J, Manyundo, R, Atsu, K, Mbuh, T, Ajeh, R, Benwi, M, Dzudie, A, Mbuh, A, Ngamani, M, Nkome, V, Amadou, D, Ngassam, E, Pefura Yone, E, Ewanoge, A, Fuhngwa, N, Moki, C, Akele, C, Kitetele, F, Lelo, P, Tabala, M, Okitolonda, E, Wenzi, L, Diafouka, M, Ekat, M, Nsonde, D, Mafou, A, Ntarambirwa, F, Tuyishimire, Y, Hakizimana, T, Ayinkamiye, J, Mukantwali, S, Kayitesi, H, Uwamahoro, O, Habumuremyi, V, Mukamana, J, Kubwimana, G, Mugenzi, P, Muhoza, B, Munyaneza, A, Ndahiro, E, Nyiransabimana, D, D'Amour Sinayobye, J, Sugira, V, Benekigeri, C, Mbaraga, G, Adedimeji, A, Anastos, K, Dilorenzo, M, Murchison, L, Addison, D, Baker, M, Brazier, E, Jones, H, Kelvin, E, Kulkarni, S, Nash, D, Tymejczyk, O, Elul, B, Cai, X, Hoover, D, Kim, H, Li, C, Shi, Q, Lancaster, K, Kuniholm, M, Parcesepe, A, Kimmel, A, Mcnairy, M, Diero, L, Plus, A, Bukusi, E, Ssali, J, Nalugoda, F, Somi, G, Lyamuya, R, Ngonyani, K, Lugina, E, Urassa, M, Michael, D, Zannou, M, Poda, A, Sarfo, F, Messou, E, Chenal, H, Minga, K, Bissagnene, E, Tanon, A, Seydi, M, Patassi, A, Koumakpai-Adeothy, S, N'Gbeche, S, Bosse, C, Kouakou, K, Folquet, M, Eboua, F, Traore, F, Dabis, F, Arrive, E, Balestre, E, Becquet, R, Bernard, C, Arikawa, S, Doring, A, Jaquet, A, Rabourdin, E, Tiendrebeogo, T, Jesson, J, Ekouevi, D, Azani, J, Coffi E, P, Gnepa, G, Kouadio, C, Tchounga, B, Maartens, G, Lettow, M, Muhairwe, J, Jores, A, Kamenova, K, Fox, M, Prozesky, H, Zangerle, R, Touloumi, G, Warszawski, J, Meyer, L, Krause, M, Ghosn, J, Leport, C, Wittkop, L, Reiss, P, Wit, F, Prins, M, Bucher, H, Gibb, D, Fatkenheuer, G, Del Amo, J, Obel, N, Thorne, C, Mocroft, A, Kirk, O, Stephan, C, Perez-Hoyos, S, Hamouda, O, Bartmeyer, B, Chkhartishvili, N, Noguera-Julian, A, Antinori, A, D'Arminio Monforte, A, Brockmeyer, N, Prieto, L, Conejo, P, Soriano-Arandes, A, Battegay, M, Kouyos, R, Mussini, C, Tookey, P, Casabona, J, Miro, J, Castagna, A, Konopnick, D, Goetghebuer, T, Sonnerborg, A, Torti, C, Sabin, C, Teira, R, Garrido, M, Haerry, D, de Wit, S, Costagliola, D, Raben, D, Barger, D, Schwimmer, C, Termote, M, Campbell, M, Frederiksen, C, Friis-Moller, N, Kjaer, J, Brandt, R, Berenguer, J, Bohlius, J, Bouteloup, V, Cozzi-Lepri, A, Dorrucci, M, Dunn, D, Furrer, H, Guiguet, M, Lambotte, O, Lodi, S, Matheron, S, Monge, S, Nakagawa, F, Paredes, R, Phillips, A, Puoti, M, Rohner, E, Schomaker, M, Sterne, J, Thiebaut, R, van der Valk, M, Hazra, R, Heckman, B, O'Gara, E, Siminski, S, Panayidou K., Davies M. -A., Anderegg N., Egger M., Fatti G., Vinikoor M., Sawry S., Ehmer J., Eley B., Phiri S., Technau K. -G. u. N., Chimbetete C., Rabie H., Boulle A., Tanser F., Wood R., Wools-Kaloustian K., Vreeman R., Oyaro P., Ayaya S., Nakigozi G., Musick B., Yiannoutsos C., Amorissani-Folquet M., Takassi E., Sylla M., Renner L., Malateste K., Desmonde S., Leroy V., Kurniati N., Hansudewechakul R., Nguyen L. V., Ly P. S., Truong K. H., Kariminia A., Sohn A. H., Edmonds A., Yumo H. A., Dusingize J. C., Yotebieng M., Judd A., Rojo P., Smit C., Grabar S., Warszwarski J., Chene G., Raban D., Patel K., Seage G. R., Van Dyke R. B., Oleske J., Williams P. L., Abzug M. J., Succi R., Machado D. M., Pinto J., Rouzier V., Luque M., Mejia F., Khol V., Tucker J., Kumarasamy N., Saghayam S., Chandrasekaran E., Wati D. K., Vedaswari D., Malino I. Y., Muktiarti D., Fong S. M., Lim M., Daut F., Nik Yusoff N. K., Mohamad P., Mohamed T. J., Drawis M. R., Nallusamy R., Chan K. C., Sudjaritruk T., Sirisanthana V., Aurpibul L., Oberdorfer P., Denjanta S., Watanaporn S., Kongphonoi A., Lumbiganon P., Kosalaraksa P., Tharnprisan P., Udomphanit T., Jourdain G., Puthanakit T., Anugulruengkitt S., Phadungphon C., Chokephaibulkit K., Lapphra K., Phongsamart W., Sricharoenchai S., Du Q. T., Nguyen C. H., Do V. C., Ha T. M., An V. T., Khu D. T. K., Pham A. N., Nguyen L. T., Le O. N., Ross J. L., Sethaputra C., Law M. G., Cahn P., Cesar C., Fink V., Sued O., Dell'isola E., Perez H., Valiente J., Yamamoto C., Grinsztejn B., Veloso V., Luz P., de Boni R., Wagner S. C., Friedman R., Moreira R., Ferreira F., Maia M., de Menezes Succi R. C., Barbosa Gouv E A A. F. a. T., Wolff M., Cortes C., Rodriguez M. F., Allendes G., Pape J. W., Marcelin A., Perodin C., Luque M. T., Padgett D., Madero J. S., Ramirez B. C., Belaunzaran P., Vega Y. C., Gotuzzo E., Carriquiry G., McGowan C. C., Shepherd B. E., Sterling T., Jayathilake K., Person A. K., Rebeiro P. F., Giganti M., Castilho J., Duda S. N., Maruri F., Vansell H., P E Lagie N., Gateretse P., Munezero J., Nitereka V., Niyongabo T., Twizere C., Bukuru H., Nahimana T., Biziragusenyuka J., Manyundo R. S., Atsu K., Mbuh T., Ajeh R., Benwi M., Dzudie A., Mbuh A., Ngamani M. L., Nkome V., Amadou D., Ngassam E., Pefura Yone E. W., Ewanoge A. N., Fuhngwa N., Moki C., Akele C., Kitetele F., Lelo P., Tabala M., Okitolonda E. W., Wenzi L., Diafouka M., Ekat M. H., Nsonde D. M., Mafou A., Ntarambirwa F., Tuyishimire Y., Hakizimana T., Ayinkamiye J., Mukantwali S., Kayitesi H., Uwamahoro O., Habumuremyi V., Mukamana J., Kubwimana G., Mugenzi P., Muhoza B., Munyaneza A., Ndahiro E., Nyiransabimana D., D'Amour Sinayobye J., Sugira V., Benekigeri C., Mbaraga G., Adedimeji A., Anastos K., Dilorenzo M., Murchison L., Ross J., Addison D., Baker M., Brazier E., Jones H., Kelvin E., Kulkarni S., Nash D., Tymejczyk O., Elul B., Cai X., Hoover D., Kim H. -Y., Li C., Shi Q., Lancaster K., Kuniholm M., Parcesepe A., Duda S., Kimmel A., McNairy M., Diero L., Plus A. M. P. A. T. H., Bukusi E., Ssali J., Nalugoda F., Somi G. R., Lyamuya R. E., Ngonyani K., Lugina E., Urassa M., Michael D., Zannou M. D., Poda A., Sarfo F. S., Messou E., Chenal H., Minga K. A., Bissagnene E., Tanon A., Seydi M., Patassi A. A., Koumakpai-Adeothy S. A., Renner L. A., N'gbeche S. M., Bosse C. A., Kouakou K., Folquet M. A., Eboua F. c. O. T., Traore F. D., Dabis F. c. O., Arrive E., Balestre E., Becquet R., Bernard C., Arikawa S. C., Doring A., Jaquet A., Rabourdin E., Tiendrebeogo T., Jesson J., Ekouevi D. K., Azani J. -C., Coffi E P., Gnepa G., Kouadio C. G. K., Tchounga B., Maartens G., Lettow M. V., Muhairwe J., Jores A., Kamenova K., Fox M. P., Prozesky H., Zangerle R., Touloumi G., Warszawski J., Meyer L., Krause M. M., Ghosn J., Leport C., Wittkop L., Reiss P., Wit F., Prins M., Bucher H., Gibb D., Fatkenheuer G., Del Amo J., Obel N., Thorne C., Mocroft A., Kirk O., Stephan C., Perez-Hoyos S., Hamouda O., Bartmeyer B., Chkhartishvili N., Noguera-Julian A., Antinori A., D'Arminio Monforte A., Brockmeyer N., Prieto L., Conejo P. R., Soriano-Arandes A., Battegay M., Kouyos R., Mussini C., Tookey P., Casabona J., Miro J. M., Castagna A., Konopnick D., Goetghebuer T., Sonnerborg A., Torti C., Sabin C., Teira R., Garrido M., Haerry D., de Wit S., Costagliola D., Raben D., Barger D., Schwimmer C., Termote M., Campbell M., Frederiksen C. M., Friis-Moller N., Kjaer J., Brandt R. S., Berenguer J., Bohlius J., Bouteloup V., Cozzi-Lepri A., Dorrucci M., Dunn D., Furrer H., Guiguet M., Lambotte O., Lodi S., Matheron S., Miro J. M. ª., Monge S., Nakagawa F., Paredes R., Phillips A., Puoti M., Rohner E., Schomaker M., Sterne J., Thiebaut R., van der Valk M., Hazra R., Heckman B., O'gara E., and Siminski S.

Abstract

Introduction: The CD4 cell count and percent at initiation of combination antiretroviral therapy (cART) are measures of advanced HIV disease and thus are important indicators of programme performance for children living with HIV. In particular, World Health Organization (WHO) 2017 guidelines on advanced HIV disease noted that >80% of children aged <5 years started cART with WHO Stage 3 or 4 disease or severe immune suppression. We compared temporal trends in CD4 measures at cART start in children from low-, middle- and high-income countries, and examined the effect of WHO treatment initiation guidelines on reducing the proportion of children initiating cART with advanced disease. Methods: We included children aged <16 years from the International Epidemiology Databases to Evaluate acquired immunodeficiency syndrome (AIDS) (IeDEA) Collaboration (Caribbean, Central and South America, Asia-Pacific, and West, Central, East and Southern Africa), the Collaboration of Observational HIV Epidemiological Research in Europe (COHERE), the North American Pediatric HIV/AIDS Cohort Study (PHACS) and International Maternal Pediatric Adolescent AIDS Clinical Trials (IMPAACT) 219C study. Severe immunodeficiency was defined using WHO guidelines. We used generalized weighted additive mixed effect models to analyse temporal trends in CD4 measurements and piecewise regression to examine the impact of 2006 and 2010 WHO cART initiation guidelines. Results: We included 52,153 children from fourteen low-, eight lower middle-, five upper middle- and five high-income countries. From 2004 to 2013, the estimated percentage of children starting cART with severe immunodeficiency declined from 70% to 42% (low-income), 67% to 64% (lower middle-income) and 61% to 43% (upper middle-income countries). In high-income countries, severe immunodeficiency at cART initiation declined from 45% (1996) to 14% (2012). There were annual decreases in the percentage of children with severe immuno

Published
2018

42. Cortical bone maturation in mice requires SOCS3 suppression of gp130/STAT3 signalling in osteocytes

Author

Walker, EC, Truong, K, McGregor, NE, Poulton, IJ, Isojima, T, Gooi, JH, Martin, TJ, Sims, NA, Walker, EC, Truong, K, McGregor, NE, Poulton, IJ, Isojima, T, Gooi, JH, Martin, TJ, and Sims, NA

Abstract

Bone strength is determined by its dense cortical shell, generated by unknown mechanisms. Here we use the Dmp1Cre:Socs3f/f mouse, with delayed cortical bone consolidation, to characterise cortical maturation and identify control signals. We show that cortical maturation requires a reduction in cortical porosity, and a transition from low to high density bone, which continues even after cortical shape is established. Both processes were delayed in Dmp1Cre:Socs3f/f mice. SOCS3 (suppressor of cytokine signalling 3) inhibits signalling by leptin, G-CSF, and IL-6 family cytokines (gp130). In Dmp1Cre:Socs3f/f bone, STAT3 phosphorylation was prolonged in response to gp130-signalling cytokines, but not G-CSF or leptin. Deletion of gp130 in Dmp1Cre:Socs3f/f mice suppressed STAT3 phosphorylation in osteocytes and osteoclastic resorption within cortical bone, leading to rescue of the corticalisation defect, and restoration of compromised bone strength. We conclude that cortical bone development includes both pore closure and accumulation of high density bone, and that these processes require suppression of gp130-STAT3 signalling in osteocytes.

Published
2020

44. Toxic epidermal necrolysis‐like lupus erythematosus: a condition to exclude in all patients with possible Stevens‐Johnson syndrome/toxic epidermal necrolysis.

Author

Truong, K., Goldinger, S., Kim, J., Smith, A., and Fernandez‐Peñas, P.

Subjects
*LUPUS erythematosus, *STEVENS-Johnson Syndrome, *POISONS, *TOXIC epidermal necrolysis
Abstract

Toxic epidermal necrolysis-like acute cutaneous lupus erythematosus and the spectrum of the acute syndrome of apoptotic pan-epidermolysis (ASAP): a case report, concept review and proposal for new classification of lupus erythematosus vesiculobullous skin lesions. Dear Editor, In patients with acute epidermal necrolysis, the most frequent diagnosis is Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) and less frequently toxic epidermal necrolysis-like lupus erythematosus (TEN-LE). Toxic epidermal necrolysis-like lupus erythematosus: a condition to exclude in all patients with possible Stevens-Johnson syndrome/toxic epidermal necrolysis. [Extracted from the article]

Published
2022
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45. Nghiên cứu các yếu tố tác động lên hiệu quả chăn nuôi vịt bầu trên địa bàn huyện Lục Yên, tỉnh Yên Bái: ứng dụng mô hình tác động cố định và tác động ngẫu nhiên

Author

Trương Khánh Tấn

Subjects
Chăn nuôi vịt, Lục Yên, mô hình tác động cố định và tác động ngẫu nhiên, yếu tố tác động, Science
Abstract

Nghiên cứu này kiểm định ảnh hưởng của các yếu tố đến kết quả chăn nuôi qua phương pháp hồi quy tác động cố định (FE) và tác động ngẫu nhiên (RE). Nghiên cứu phân tích số liệu 96 hộ chăn nuôi vịt bầu trong 3 năm từ 2019 đến 2021 trên địa bàn huyện Lục Yên, tỉnh Yên Bái. Kết quả kiểm định Hausman cho thấy mô hình FE phù hợp hơn RE trong nghiên cứu này. Nghiên cứu cho thấy các biến số trình độ học vấn và giới tính không có ý nghĩa thống kê tác động đến hiệu quả chăn nuôi. Các biến con giống, thức ăn chăn nuôi có ý nghĩa tác động tích cực lên sản lượng trong khi đó biến vắc xin và thuốc thú y, tuổi có quan hệ ngược chiều lên biến đầu ra. Kết quả cho thấy người chăn nuôi đang gặp khó khăn trong việc kiểm soát dịch bệnh và việc sử dụng vắc-xin và thuốc thú y chưa hiệu quả. Kết quả nghiên cứu gợi ý một số biện pháp nhằm nâng cao hiệu quả trong chăn nuôi.

Published
2024
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49. Global temporal changes in the proportion of children with advanced disease at the start of combination antiretroviral therapy in an era of changing criteria for treatment initiation

Author

Panayidou K., Davies M. -A., Anderegg N., Egger M., Fatti G., Vinikoor M., Sawry S., Ehmer J., Eley B., Phiri S., Technau K. -G. u. N., Chimbetete C., Rabie H., Boulle A., Tanser F., Wood R., Wools-Kaloustian K., Vreeman R., Oyaro P., Ayaya S., Nakigozi G., Musick B., Yiannoutsos C., Amorissani-Folquet M., Takassi E., Sylla M., Renner L., Malateste K., Desmonde S., Leroy V., Kurniati N., Hansudewechakul R., Nguyen L. V., Ly P. S., Truong K. H., Kariminia A., Sohn A. H., Edmonds A., Yumo H. A., Dusingize J. C., Yotebieng M., Judd A., Rojo P., Smit C., Grabar S., Warszwarski J., Chene G., Raban D., Patel K., Seage G. R., Van Dyke R. B., Oleske J., Williams P. L., Abzug M. J., Succi R., Machado D. M., Pinto J., Rouzier V., Luque M., Mejia F., Khol V., Tucker J., Kumarasamy N., Saghayam S., Chandrasekaran E., Wati D. K., Vedaswari D., Malino I. Y., Muktiarti D., Fong S. M., Lim M., Daut F., Nik Yusoff N. K., Mohamad P., Mohamed T. J., Drawis M. R., Nallusamy R., Chan K. C., Sudjaritruk T., Sirisanthana V., Aurpibul L., Oberdorfer P., Denjanta S., Watanaporn S., Kongphonoi A., Lumbiganon P., Kosalaraksa P., Tharnprisan P., Udomphanit T., Jourdain G., Puthanakit T., Anugulruengkitt S., Phadungphon C., Chokephaibulkit K., Lapphra K., Phongsamart W., Sricharoenchai S., Du Q. T., Nguyen C. H., Do V. C., Ha T. M., An V. T., Khu D. T. K., Pham A. N., Nguyen L. T., Le O. N., Ross J. L., Sethaputra C., Law M. G., Cahn P., Cesar C., Fink V., Sued O., Dell'isola E., Perez H., Valiente J., Yamamoto C., Grinsztejn B., Veloso V., Luz P., de Boni R., Wagner S. C., Friedman R., Moreira R., Ferreira F., Maia M., de Menezes Succi R. C., Barbosa Gouv E A A. F. a. T., Wolff M., Cortes C., Rodriguez M. F., Allendes G., Pape J. W., Marcelin A., Perodin C., Luque M. T., Padgett D., Madero J. S., Ramirez B. C., Belaunzaran P., Vega Y. C., Gotuzzo E., Carriquiry G., McGowan C. C., Shepherd B. E., Sterling T., Jayathilake K., Person A. K., Rebeiro P. F., Giganti M., Castilho J., Duda S. N., Maruri F., Vansell H., P E Lagie N., Gateretse P., Munezero J., Nitereka V., Niyongabo T., Twizere C., Bukuru H., Nahimana T., Biziragusenyuka J., Manyundo R. S., Atsu K., Mbuh T., Ajeh R., Benwi M., Dzudie A., Mbuh A., Ngamani M. L., Nkome V., Amadou D., Ngassam E., Pefura Yone E. W., Ewanoge A. N., Fuhngwa N., Moki C., Akele C., Kitetele F., Lelo P., Tabala M., Okitolonda E. W., Wenzi L., Diafouka M., Ekat M. H., Nsonde D. M., Mafou A., Ntarambirwa F., Tuyishimire Y., Hakizimana T., Ayinkamiye J., Mukantwali S., Kayitesi H., Uwamahoro O., Habumuremyi V., Mukamana J., Kubwimana G., Mugenzi P., Muhoza B., Munyaneza A., Ndahiro E., Nyiransabimana D., D'Amour Sinayobye J., Sugira V., Benekigeri C., Mbaraga G., Adedimeji A., Anastos K., Dilorenzo M., Murchison L., Ross J., Addison D., Baker M., Brazier E., Jones H., Kelvin E., Kulkarni S., Nash D., Tymejczyk O., Elul B., Cai X., Hoover D., Kim H. -Y., Li C., Shi Q., Lancaster K., Kuniholm M., Parcesepe A., Duda S., Kimmel A., McNairy M., Diero L., Plus A. M. P. A. T. H., Bukusi E., Ssali J., Nalugoda F., Somi G. R., Lyamuya R. E., Ngonyani K., Lugina E., Urassa M., Michael D., Zannou M. D., Poda A., Sarfo F. S., Messou E., Chenal H., Minga K. A., Bissagnene E., Tanon A., Seydi M., Patassi A. A., Koumakpai-Adeothy S. A., Renner L. A., N'gbeche S. M., Bosse C. A., Kouakou K., Folquet M. A., Eboua F. c. O. T., Traore F. D., Dabis F. c. O., Arrive E., Balestre E., Becquet R., Bernard C., Arikawa S. C., Doring A., Jaquet A., Rabourdin E., Tiendrebeogo T., Jesson J., Ekouevi D. K., Azani J. -C., Coffi E P., Gnepa G., Kouadio C. G. K., Tchounga B., Maartens G., Lettow M. V., Muhairwe J., Jores A., Kamenova K., Fox M. P., Prozesky H., Zangerle R., Touloumi G., Warszawski J., Meyer L., Krause M. M., Ghosn J., Leport C., Wittkop L., Reiss P., Wit F., Prins M., Bucher H., Gibb D., Fatkenheuer G., Del Amo J., Obel N., Thorne C., Mocroft A., Kirk O., Stephan C., Perez-Hoyos S., Hamouda O., Bartmeyer B., Chkhartishvili N., Noguera-Julian A., Antinori A., D'Arminio Monforte A., Brockmeyer N., Prieto L., Conejo P. R., Soriano-Arandes A., Battegay M., Kouyos R., Mussini C., Tookey P., Casabona J., Miro J. M., Castagna A., Konopnick D., Goetghebuer T., Sonnerborg A., Torti C., Sabin C., Teira R., Garrido M., Haerry D., de Wit S., Costagliola D., Raben D., Barger D., Schwimmer C., Termote M., Campbell M., Frederiksen C. M., Friis-Moller N., Kjaer J., Brandt R. S., Berenguer J., Bohlius J., Bouteloup V., Cozzi-Lepri A., Dorrucci M., Dunn D., Furrer H., Guiguet M., Lambotte O., Lodi S., Matheron S., Miro J. M. ª., Monge S., Nakagawa F., Paredes R., Phillips A., Puoti M., Rohner E., Schomaker M., Sterne J., Thiebaut R., van der Valk M., Hazra R., Heckman B., O'gara E., Siminski S., Panayidou, K, Davies, M, Anderegg, N, Egger, M, Fatti, G, Vinikoor, M, Sawry, S, Ehmer, J, Eley, B, Phiri, S, Technau, K, Chimbetete, C, Rabie, H, Boulle, A, Tanser, F, Wood, R, Wools-Kaloustian, K, Vreeman, R, Oyaro, P, Ayaya, S, Nakigozi, G, Musick, B, Yiannoutsos, C, Amorissani-Folquet, M, Takassi, E, Sylla, M, Renner, L, Malateste, K, Desmonde, S, Leroy, V, Kurniati, N, Hansudewechakul, R, Nguyen, L, Ly, P, Truong, K, Kariminia, A, Sohn, A, Edmonds, A, Yumo, H, Dusingize, J, Yotebieng, M, Judd, A, Rojo, P, Smit, C, Grabar, S, Warszwarski, J, Chene, G, Raban, D, Patel, K, Seage, G, Van Dyke, R, Oleske, J, Williams, P, Abzug, M, Succi, R, Machado, D, Pinto, J, Rouzier, V, Luque, M, Mejia, F, Khol, V, Tucker, J, Kumarasamy, N, Saghayam, S, Chandrasekaran, E, Wati, D, Vedaswari, D, Malino, I, Muktiarti, D, Fong, S, Lim, M, Daut, F, Nik Yusoff, N, Mohamad, P, Mohamed, T, Drawis, M, Nallusamy, R, Chan, K, Sudjaritruk, T, Sirisanthana, V, Aurpibul, L, Oberdorfer, P, Denjanta, S, Watanaporn, S, Kongphonoi, A, Lumbiganon, P, Kosalaraksa, P, Tharnprisan, P, Udomphanit, T, Jourdain, G, Puthanakit, T, Anugulruengkitt, S, Phadungphon, C, Chokephaibulkit, K, Lapphra, K, Phongsamart, W, Sricharoenchai, S, Du, Q, Nguyen, C, Do, V, Ha, T, An, V, Khu, D, Pham, A, Le, O, Ross, J, Sethaputra, C, Law, M, Cahn, P, Cesar, C, Fink, V, Sued, O, Dell'Isola, E, Perez, H, Valiente, J, Yamamoto, C, Grinsztejn, B, Veloso, V, Luz, P, de Boni, R, Wagner, S, Friedman, R, Moreira, R, Ferreira, F, Maia, M, de Menezes Succi, R, Barbosa Gouv E A, A, Wolff, M, Cortes, C, Rodriguez, M, Allendes, G, Pape, J, Marcelin, A, Perodin, C, Padgett, D, Madero, J, Ramirez, B, Belaunzaran, P, Vega, Y, Gotuzzo, E, Carriquiry, G, Mcgowan, C, Shepherd, B, Sterling, T, Jayathilake, K, Person, A, Rebeiro, P, Giganti, M, Castilho, J, Duda, S, Maruri, F, Vansell, H, P E Lagie, N, Gateretse, P, Munezero, J, Nitereka, V, Niyongabo, T, Twizere, C, Bukuru, H, Nahimana, T, Biziragusenyuka, J, Manyundo, R, Atsu, K, Mbuh, T, Ajeh, R, Benwi, M, Dzudie, A, Mbuh, A, Ngamani, M, Nkome, V, Amadou, D, Ngassam, E, Pefura Yone, E, Ewanoge, A, Fuhngwa, N, Moki, C, Akele, C, Kitetele, F, Lelo, P, Tabala, M, Okitolonda, E, Wenzi, L, Diafouka, M, Ekat, M, Nsonde, D, Mafou, A, Ntarambirwa, F, Tuyishimire, Y, Hakizimana, T, Ayinkamiye, J, Mukantwali, S, Kayitesi, H, Uwamahoro, O, Habumuremyi, V, Mukamana, J, Kubwimana, G, Mugenzi, P, Muhoza, B, Munyaneza, A, Ndahiro, E, Nyiransabimana, D, D'Amour Sinayobye, J, Sugira, V, Benekigeri, C, Mbaraga, G, Adedimeji, A, Anastos, K, Dilorenzo, M, Murchison, L, Addison, D, Baker, M, Brazier, E, Jones, H, Kelvin, E, Kulkarni, S, Nash, D, Tymejczyk, O, Elul, B, Cai, X, Hoover, D, Kim, H, Li, C, Shi, Q, Lancaster, K, Kuniholm, M, Parcesepe, A, Kimmel, A, Mcnairy, M, Diero, L, Plus, A, Bukusi, E, Ssali, J, Nalugoda, F, Somi, G, Lyamuya, R, Ngonyani, K, Lugina, E, Urassa, M, Michael, D, Zannou, M, Poda, A, Sarfo, F, Messou, E, Chenal, H, Minga, K, Bissagnene, E, Tanon, A, Seydi, M, Patassi, A, Koumakpai-Adeothy, S, N'Gbeche, S, Bosse, C, Kouakou, K, Folquet, M, Eboua, F, Traore, F, Dabis, F, Arrive, E, Balestre, E, Becquet, R, Bernard, C, Arikawa, S, Doring, A, Jaquet, A, Rabourdin, E, Tiendrebeogo, T, Jesson, J, Ekouevi, D, Azani, J, Coffi E, P, Gnepa, G, Kouadio, C, Tchounga, B, Maartens, G, Lettow, M, Muhairwe, J, Jores, A, Kamenova, K, Fox, M, Prozesky, H, Zangerle, R, Touloumi, G, Warszawski, J, Meyer, L, Krause, M, Ghosn, J, Leport, C, Wittkop, L, Reiss, P, Wit, F, Prins, M, Bucher, H, Gibb, D, Fatkenheuer, G, Del Amo, J, Obel, N, Thorne, C, Mocroft, A, Kirk, O, Stephan, C, Perez-Hoyos, S, Hamouda, O, Bartmeyer, B, Chkhartishvili, N, Noguera-Julian, A, Antinori, A, D'Arminio Monforte, A, Brockmeyer, N, Prieto, L, Conejo, P, Soriano-Arandes, A, Battegay, M, Kouyos, R, Mussini, C, Tookey, P, Casabona, J, Miro, J, Castagna, A, Konopnick, D, Goetghebuer, T, Sonnerborg, A, Torti, C, Sabin, C, Teira, R, Garrido, M, Haerry, D, de Wit, S, Costagliola, D, Raben, D, Barger, D, Schwimmer, C, Termote, M, Campbell, M, Frederiksen, C, Friis-Moller, N, Kjaer, J, Brandt, R, Berenguer, J, Bohlius, J, Bouteloup, V, Cozzi-Lepri, A, Dorrucci, M, Dunn, D, Furrer, H, Guiguet, M, Lambotte, O, Lodi, S, Matheron, S, Monge, S, Nakagawa, F, Paredes, R, Phillips, A, Puoti, M, Rohner, E, Schomaker, M, Sterne, J, Thiebaut, R, van der Valk, M, Hazra, R, Heckman, B, O'Gara, E, and Siminski, S

Subjects
0301 basic medicine, Male, sub-Saharan Africa, Databases, Factual, CD4 cell count, HIV Infections, Global Health, Cohort Studies, 0302 clinical medicine, Central and South America, Advanced disease, Medicine, 030212 general & internal medicine, Prospective Studies, Cd4 cell count, skin and connective tissue diseases, Child, Research Articles, humanities, 3. Good health, Europe, Infectious Diseases, Child, Preschool, Income, Drug Therapy, Combination, Female, advanced HIV disease, antiretroviral therapy, Asia, Caribbean, North America, WHO guidelines, Adolescent, Adult, Anti-HIV Agents, CD4 Lymphocyte Count, Drug Administration Schedule, Follow-Up Studies, Humans, Poverty, World Health Organization, Research Article, medicine.medical_specialty, education, 610 Medicine & health, 03 medical and health sciences, Acquired immunodeficiency syndrome (AIDS), 360 Social problems & social services, Intensive care medicine, business.industry, Public Health, Environmental and Occupational Health, medicine.disease, 030112 virology, Antiretroviral therapy, Who guidelines, sense organs, business, sub‐Saharan Africa
Abstract

Introduction: The CD4 cell count and percent at initiation of combination antiretroviral therapy (cART) are measures of advanced HIV disease and thus are important indicators of programme performance for children living with HIV. In particular, World Health Organization (WHO) 2017 guidelines on advanced HIV disease noted that >80% of children aged 40% of children in low- and middle-income countries started cART with severe immunodeficiency compared to

Published
2018

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