1. Department of Psychiatry, Korea University Medical Center, Seoul, Republic of Korea.
2. Department of Psychiatry, College of Medicine, Soonchunhyang University, Bucheon, Republic of Korea.
3. Child and Adolescent Health Service, Perth, Western Australia, Australia.
4. Department of Psychiatry, School of Medicine, Pusan National University, Busan, Republic of Korea.
5. Department of Psychiatry, College of Medicine, The Catholic University, Daejeon, Republic of Korea.
6. Department of Psychiatry, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.