1. Department of Psychiatry, College of Medicine, Korea University, Seoul, Korea
2. Department of Psychiatry, College of Medicine, Hallym University, Seoul, Korea
3. Department of Psychiatry, College of Medicine, Chung-Ang University, Seoul, Korea
4. Department of Psychiatry, Keimyung School of Medicine and Institute for Medical Science, Taegu, Korea
5. Department of Psychiatry, Kangdong Sacred Heart Hospital, College of Medicine, Hallym University, Seoul, Korea
6. Department of Psychiatry, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University, Seoul, Korea
7. Department of Psychiatry, College of Medicine, Yonsei University, Seoul, Korea
8. Department of Psychiatry, College of Medicine, Catholic University of Korea, Seoul, Korea
9. Department of Psychiatry, College of Medicine, SoonChunHyang University, Seoul, Korea
10. Department of Psychiatry, College of Medicine, Chungnam National University, Taejon, Korea
11. Department of Psychiatry, College of Medicine, Dong-A University College of Medicine, Pusan, Korea