1. Department of Psychiatry, Yonsei University College of Medicine, Seoul, Republic of Korea.
2. Section of Affect and Neuroscience, Institute of Behavioural Science in Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
3. Seoul Total Health Care Center, Kangbuk Samsung Hospital, Seoul, Republic of Korea.
4. Department of Psychiatry, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Republic of Korea.