1. Department of Family Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
2. Department of Family Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
3. Department of Public Health, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
4. Office of the Superintendent, Taipei Veterans General Hospital Hsinchu Branch, Hsinchu, Taiwan.
5. Office of the Deputy Superintendent, National Yang Ming Chiao Tung University Hospital, Ilan, Taiwan.