1. Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, Korea
2. Department of Psychiatry, Namwon Sungil Mental Hospital, Namwon, Korea
3. Department of Psychiatry, Naju National Hospital, Naju, Korea
4. WHO Collaborating Center of Yongin Mental Hospital, Yongin, Korea
5. Department of Psychiatry, College of Medicine, Jeju National University, Jeju, Korea
6. Department of Psychiatry, College of Medicine, Hallym University, Anyang, Korea