1. Department of Neuropsychiatry; Veterans Health Service Medical Center; Seoul Republic of Korea
2. Department of Psychiatry; Yonsei University College of Medicine; Seoul Republic of Korea
3. Institute of Behavioral Science in Medicine; Yonsei University College of Medicine; Seoul Republic of Korea
4. Department of Psychiatry, Bundang CHA Medical Center; CHA University School of Medicine, Seongnam-si; Gyeonggi-do Republic of Korea