1. Department of Psychiatry, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
2. Department of Workplace Mental Health Institute, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
3. Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea
4. Public Healthcare Center, Seoul National University Hospital, Seoul, Korea
5. Department of Health Policy and Management, Seoul National University College of Medicine, Seoul, Korea
6. HIRA Research Institute, Health Insurance Review and Assessment Service, Wonju, Korea
7. Institue of Public Health and Medical Service, Seoul, Korea
8. Department of Psychiatry, Seoul National University Hospital, Seoul, Korea