1. Department of Family Medicine; Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine; Kaohsiung Taiwan
2. Division of Hepato-Gastroenterology; Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine; Kaohsiung Taiwan
3. Department of Health; Tainan City Government; Tainan Taiwan