1. Department of Psychiatry, Sanggye Paik Hospital, College of Medicine, Inje University, Seoul, Korea.
2. Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, Korea.
3. Department of Psychiatry, College of Medicine, Chung-Ang University, Seoul, Korea.
4. Department of Psychiatry, College of Medicine, Chosun University, Gwangju, Korea.
5. Department of Psychiatry, Wonkwang University Hospital, School of Medicine, Wonkwang University, Iksan, Korea.
6. Department of Psychiatry, Haeundae Paik Hospital, College of Medicine, Inje University, Busan, Korea.
7. Department of Psychiatry, Soonchunhyang University Cheonan Hospital, College of Medicine, Soonchunhyang University, Cheonan, Korea.
8. Department of Psychiatry, Naju National Hospital, Naju, Korea.
9. Department of Psychiatry, Keyo Hospital, Uiwang, Korea.
10. Department of Psychiatry, Jeju National University Hospital, Jeju, Korea.
11. Department of Psychiatry, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea.