1. Department of Psychiatry, Buddhist Tzu-Chi General Hospital, Taipei Branch, Taipei, Taiwan
2. Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan and Mackay Medicine, Nursing and Management College, Taipei, Taiwan
3. Mackay Memorial Hospital, Mackay Medicine, Nursing and Management College, Taipei, Taiwan and Mackay Medical College, Taipei, Taiwan
4. Department of Psychiatry, National Cheng-Kung University Hospital, Tainan, Taiwan and Institute of Behavioral Medicine, College of Medicine, National Cheng-Kung University, Tainan, Taiwan