Choi, H. G., Jung, Y., & Kwon, M. (2021). Association between previous rheumatoid arthritis and COVID-19 and its severity: A nationwide cohort study in South Korea. BMJ Publishing Group.
Chicago Style (17th ed.) CitationChoi, Hyo Geun, Younghee Jung, and Mihye Kwon. Association Between Previous Rheumatoid Arthritis and COVID-19 and Its Severity: A Nationwide Cohort Study in South Korea. BMJ Publishing Group, 2021.
MLA (8th ed.) CitationChoi, Hyo Geun, et al. Association Between Previous Rheumatoid Arthritis and COVID-19 and Its Severity: A Nationwide Cohort Study in South Korea. BMJ Publishing Group, 2021.
Warning: These citations may not always be 100% accurate.