1. Department of Psychiatry, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea.
2. Department of Psychiatry, Seoul National Hospital, Seoul, Korea.
3. Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea.
4. Department of Psychiatry, Hallym University College of Medicine, Chuncheon, Korea.
5. Department of Psychiatry, College of Medicine, Inha University, Incheon, Korea.
6. Department of Psychiatry, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
7. Department of Psychiatry, Our Lady of Mercy Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea.
8. Department of Psychiatry, Korea University College of Medicine, Seoul, Korea.
9. Department of Psychiatry, College of Medicine, Dankook University, Cheonan, Korea.
10. Yong-In Mental Hospital, Yongin, Korea.