1. Department of Psychiatry and Institute of Medical Science, Jeju National University School of Medicine, Jeju, Korea.
2. Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Korea.
3. Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, Korea.
4. Department of Psychiatry, Naju National Hospital, Naju, Korea.
5. Department of Psychiatry, Kyungpook National University Hospital, Daegu, Korea.
6. Department of Pediatrics, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea.
7. Department of Chemistry, Jeju National University College of Natural Science, Jeju, Korea.
8. Departments of Preventive Medicine and Institute of Medical Science, Jeju National University School of Medicine, Jeju, Korea.