1. Depression Center, Department of Psychiatry, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
2. Depression Clinical and Research Program, Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
3. Korea Youth Counselling and Welfare Institute, Seoul, Korea.
4. Department of Psychiatry, Seoul Paik Hospital, Inje University School of Medicine, Seoul, Korea.
5. Stress Research Institute, Inje University, Seoul, Korea.
6. National Evidence-based Healthcare Collaborating Agency, Seoul, Korea.