1. Graduate Institute of Clinical Medical Science, College of Medicine, China Medical University, Taichung, Taiwan;
2. Tsaotun Psychiatric Center, Ministry of Health and Welfare, Nantou, Taiwan;
3. National Changhua University of Education, Changhua, Taiwan;
4. Department of Psychiatry, Changhua Hospital, Ministry of Health and Welfare, Changhua, Taiwan;
5. Department of Mathematics, Tamkang University, Taipei, Taiwan;
6. Feng-Yuan Hospital, Ministry of Health and Welfare, Taichung, Taiwan;
7. Department of Psychiatry, Harbor-UCLA Medical Center, Torrance, CA, USA;
8. Department of Psychiatry, China Medical University Hospital, Taichung, Taiwan