1. College of Medicine; China Medical University; Taichung Taiwan
2. Department of Family Medicine; China Medical University Hospital; Taichung Taiwan
3. Management Office for Health Data; China Medical University Hospital; Taichung Taiwan
4. College of Medicine; Tzu Chi University; Hualien Taiwan
5. Division of Hepatogastroenterology; Department of Internal Medicine; Taichung Tzu Chi General Hospital; No. 66, Sec. 1, Fongsing Road, Tanzi District, Taichung 427 Taiwan