1. Seoul National University Hospital, Seoul, Korea.
2. Yeongeon Student Support Center, Seoul National University College of Medicine, Seoul, Korea.
3. Department of Psychiatry, National Health Insurance Service Ilsan Hospital, Goyang, Korea.
4. Adult Psychiatry, Division of Medical Services, National Center for Mental Health, Seoul, Korea.
5. Department of Psychiatry, School of Medicine, Konkuk University, Chungju, Korea.
6. Department of Psychiatry, School of Medicine, Kyoungpook National University, Daegu, Korea.
7. Department of Psychiatry, Inje University, Ilsan-Paik Hospital, Goyang, Korea.
8. Department of Psychiatry, Hanyang University Guri Hospital, Guri, Korea.
9. Institute of Behavioral Science in Medicine, Yonsei University College of Medicine, Seoul, Korea.
10. Department of Psychiatry, Chonbuk National University Medical School, Jeonju, Korea.