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