1. Department of Psychiatry, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
2. Department of Psychiatry, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul, Korea
3. Department of Psychiatry, Pusan National University School of Medicine, Busan, Korea
4. Department of Psychiatry, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Korea
5. Department of Psychiatry, Kyung Hee University School of Medicine, Seoul, Korea
6. Department of Psychiatry, Soonchunhyang University Seoul Hospital, Seoul, Korea
7. Department of Psychiatry, International St. Mary’s Hospital, Catholic Kwandong University, Incheon, Korea
8. Department of Psychiatry, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, Korea