1. Department of Psychiatry, Seoul National Hospital, Seoul, Republic of Korea.
2. Division of Child and Adolescent Psychiatry, Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea.
3. Department of Psychiatry, Bongseng Memorial Hospital, Busan, Republic of Korea.
4. Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea.