1. Hepatobiliary Division, Department of Internal Medicine; Kaohsiung Medical University Hospital; Kaohsiung Taiwan
2. Graduate Institute of Clinical Medicine; Kaohsiung Medical University; Kaohsiung Taiwan
3. Faculty of Internal Medicine, College of Medicine; Kaohsiung Medical University; Kaohsiung Taiwan
4. Department of Internal Medicine, Kaohsiung Municipal Ta-Tung Hospital; Kaohsiung Medical University; Kaohsiung Taiwan