1. Department of Psychiatry, Jeju National University Hospital, Jeju, Korea
2. Department of Psychiatry, Jeju National University School of Medicine, Jeju, Korea
3. Department of Psychiatry, Kyungpook National University Children’s Hospital, Daegu, Korea
4. Mental Health Research Institute, National Center for Mental Health, Seoul, Korea
5. Department of Psychiatry, Seoul National University School of Medicine, Seoul, Korea