1. Department of Psychiatry, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
2. Department of Mental Health, Seoul National Hospital, Seoul, Korea.
3. Department of Addiction Rehabilitation and Social Welfare, Eulji University, Daejeon, Korea.
4. Department of Pediatrics, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea.
5. Department of Psychiatry, Inje University Ilsan Paik Hospital, Goyang, Korea.