1. Department of Family Medicine; Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul South Korea
2. Department of Cardiology and Cardiovascular Imaging Center; Cardiac and Vascular Center; Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul South Korea
3. Department of Epidemiology; School of Public Health and Institute of Health Environment; Seoul National University; Seoul South Korea
4. Department of Family Medicine; Busan Paik Hospital; School of Medicine; Inje University; Busan South Korea