1. Department of Psychiatry, Chungbuk National University Hospital, Cheongju, Korea.
2. Chungcheongbuk-do Provincial Mental Health Center, Cheongju, Korea.
3. Division of Psychiatry, Health Screening and Promotion Center, Asan Medical Center, Seoul, Korea.
4. Department of Psychiatry, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
5. Department of Psychology, Sungshin Women's University, Seoul, Korea.