Affiliation: | 1. Center for Total Health Studies, Kangbuk Samsung Hospital, Seoul, Korea;2. Center for Health Promotion, Samsung Medical Center, Seoul, Korea;3. Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea;4. National Center for Epidemiology, Instituto de Salud Carlos III, Madrid, Spain Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain;5. Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea Departments of Epidemiology and Medicine, and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA;6. Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, Korea |