1. Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University, School of Medicine; Seoul Korea
2. Department of Occupational and Environmental Medicine; Kangbuk Samsung Hospital, Sungkyunkwan University, School of Medicine; Seoul Korea
3. Department of Laboratory Medicine; Kangbuk Samsung Hospital, Sungkyunkwan University, School of Medicine; Seoul Korea
4. Department of Health Sciences and Technology; Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University; Seoul Korea
5. Department of Epidemiology; Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health; Baltimore Maryland USA
6. Department of Medicine; Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health; Baltimore Maryland USA
7. Department of Social and Preventive Medicine; Julius Centre University of Malaya, Faculty of Medicine, University of Malaya; Kuala Lumpur Malaysia
8. Department of Anesthesiology and Pain Medicine; Kangbuk Samsung Hospital, Sungkyunkwan University, School of Medicine; Seoul Korea
9. Department of Family Medicine; Kangbuk Samsung Hospital, Sungkyunkwan University, School of Medicine; Seoul Korea