1. Department of Psychiatry, Yong-In Mental Hospital, Yongin, Korea.
2. Institute of Mental Health, Hanyang University, Seoul, Korea.
3. Department of Psychiatry, Hanyang University Seoul Hospital, Seoul, Korea.
4. Department of Counseling Psychology, Chosun University, Gwangju, Korea.
5. Department of Psychiatry, Soonchunhyang University Bucheon Hospital, Bucheon, Korea.
6. Department of Psychiatry, College of Medicine, Soonchunhyang University, Asan, Korea.
7. RH Depression Clinic, Seoul, Korea.
8. Department of Psychology, College of Humanities, Keimyung University, Daegu, Korea.
9. Department of Psychiatry, College of Medicine, Korea University, Seoul, Korea.
10. Department of Psychiatry, College of Medicine, Hanyang University, Seoul, Korea.
11. Department of Psychiatry, Hanyang University Guri Hospital, Guri, Korea.