1. Workplace Mental Health Institute, Kangbuk Samsung Hospital, Seoul, Republic of Korea
2. Department of Psychiatry, Soonchunhyang University Cheonan Hospital, Cheonan, Republic of Korea
3. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
4. Center for Cohort Study, Total Healthcare Center, Kangbuk Samsung Hospital, Seoul, Republic of Korea
5. Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea
6. Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
7. Department of Psychiatry, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
8. Department of Family Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea