1. Department of Psychiatry, Mackay Memorial Hospital, Taipei, Taiwan
2. Mackay Junior College of Medicine, Nursing and Management, Taipei, Taiwan
3. Department of Mathematics, Tamkang University, Taipei, Taiwan
4. Department of Psychiatry, Harbor–UCLA Medical Center, Torrance, CA, USA
5. Los Angeles Biomedical Research Institute, Torrance, CA, USA
6. Department of Psychiatry, China Medical University Hospital, Taichung, Taiwan
7. Institute of Clinical Medical Science, China Medical University Medical College, Taichung, Taiwan