1. Department of Psychiatry; Kangbuk Samsung Hospital; School of Medicine; Sungkyunkwan University; Seoul Korea
2. Department of Psychiatry; College of Medicine; Chung-Ang University; Seoul Korea
3. Naju National Hospital; Naju Korea
4. Department of Psychiatry; College of Medicine; Inje University; Seoul Korea
5. Department of Psychiatry; College of Medicine; Hallym University; Anyang Korea
6. Department of Psychiatry; College of Medicine; Konkuk University; Chungju Korea
7. Department of Psychiatry; Yeouido St. Mary's Hospital; College of Medicine; The Catholic University of Korea; Seoul Korea
8. Department of Psychiatry; College of Medicine; Inje University; Busan Korea