1. Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine
2. Center for Cohort Studies, Total Healthcare Center, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine
3. Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University
4. Department of Laboratory Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine
5. Department of Family Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine
6. Division of Cardiology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine