1. Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan
2. Department of Psychiatry, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
3. Department of Psychiatry, Beitou Branch, Tri-Service General Hospital, Taipei, Taiwan
4. Department of Psychiatry, National Defense Medical Center, Taipei, Taiwan
5. Department of Psychiatry, College of Medicine, National Yang-Ming Chiao Tung University, Taipei, Taiwan
6. Department of Psychiatry, General Cheng Hsin Hospital, Taipei, Taiwan
7. Department of Family Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
8. Institute of Hospital and Health Care Administration, National Yang-Ming Chiao Tung University, Taipei, Taiwan
9. Department of Family Medicine, Taipei Veterans General Hospital, Hsinchu Branch, Hsinchu, Taiwan