1. Department of Family Medicine, College of Medicine and Hospital; National Taiwan University; Taipei Taiwan
2. Department of Family Medicine; China Medical University Hospital; Taichung Taiwan
3. School of Medicine; China Medical University; Taichung Taiwan
4. Department of Family Medicine, Kaohsiung Medical University Hospital; Kaohsiung Medical University; Kaohsiung Taiwan
5. Department of Community and Family Medicine; National Taiwan University Hospital Yun-Lin Branch; Yun-Lin Taiwan
6. Department of Family Medicine; Taipei Veterans General Hospital; Taipei Taiwan
7. School of Medicine; National Yang-Ming University; Taipei Taiwan
8. Center for Preventive Service, Hualien Tzu Chi Hospital; Buddhist Tzu Chi Medical Foundation; Hualien Taiwan
9. College of Medicine; Tzu Chi University; Hualien Taiwan