1. Institute of Medicine; Chung Shan Medical University; Taichung Taiwan
2. Department of Nursing; Cathay General Hospital; Taipei Taiwan
3. School of Public Health; Chung Shan Medical University; Taichung Taiwan
4. Chung Shan Medical University Hospital; Taichung Taiwan
5. Department of Internal Medicine; Cathay General Hospital; Taipei Taiwan
6. School of Medicine; Chung Shan Medical University; Taichung Taiwan
7. Department of Surgery; Chung Shan Medical University Hospital; Taichung Taiwan
8. Department of Family and Community Medicine; Chung Shan Medical University Hospital; Taichung Taiwan
9. Evidence-based Medicine Center; Chung Shan Medical University Hospital; Taichung Taiwan
10. Department of Obstetrics and Gynecology; Chung Shan Medical University Hospital; Taichung Taiwan