1. Department of Psychiatry, Depression Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
2. Department of Psychiatry, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.
3. Research Institute for Future Medicine, Samsung Medical Center, Seoul, Korea.
4. Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine Seoul, South Korea.
5. Depression Clinical and Research Program, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts.
6. Korean Psychological Autopsy Center (KPAC), Seoul, Korea.
7. Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
8. Department of Otorhinolaryngology-Head and Neck Surgery, Head and Neck Cancer Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
9. Department of Health Sciences & Technology, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, Korea.
10. Department of Medical Device Management & Research, and Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, Korea.
11. Department of Clinical Research Design & Evaluation, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, Korea.