Cite
Differences in classification of COPD patients into risk groups A-D: a cross-sectional study.
MLA
Zogg, Stefanie, et al. “Differences in Classification of COPD Patients into Risk Groups A-D: A Cross-Sectional Study.” BMC Research Notes, vol. 7, Aug. 2014, p. 562. EBSCOhost, https://doi.org/10.1186/1756-0500-7-562.
APA
Zogg, S., Dürr, S., Miedinger, D., Steveling, E. H., Maier, S., & Leuppi, J. D. (2014). Differences in classification of COPD patients into risk groups A-D: a cross-sectional study. BMC Research Notes, 7, 562. https://doi.org/10.1186/1756-0500-7-562
Chicago
Zogg, Stefanie, Selina Dürr, David Miedinger, Esther Helen Steveling, Sabrina Maier, and Jörg Daniel Leuppi. 2014. “Differences in Classification of COPD Patients into Risk Groups A-D: A Cross-Sectional Study.” BMC Research Notes 7 (August): 562. doi:10.1186/1756-0500-7-562.