1. Department of Psychiatry, Chonnam National University Medical School, Gwangju, Korea
2. Department of Psychiatry, Inje University Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea
3. Department of Psychiatry, College of Medicine, Yeungnam University, Daegu, Korea
4. Department of Psychiatry, Kyungpook National University School of Medicine, Daegu, Korea
5. Department of Psychiatry, Chonbuk National University Medical School, Jeonju, Korea