1. Hepatobiliary Division; Department of Internal Medicine; Kaohsiung Medical University Hospital; Kaohsiung Medical University; Kaohsiung Taiwan
2. Hepatitis Center; Kaohsiung Medical University Hospital; Kaohsiung Medical University; Kaohsiung Taiwan
3. Faculty of Internal Medicine; College of Medicine; Kaohsiung Medical University; Kaohsiung Taiwan
4. Department of Occupational Medicine; Kaohsiung Municipal Ta-Tung Hospital; Kaohsiung Medical University; Kaohsiung Taiwan
5. Department of Internal Medicine; Kaohsiung Municipal Hsiao-Kang Hospital; Kaohsiung Medical University; Kaohsiung Taiwan
6. Department of Medical Laboratory Science and Biotechnology; College of Health Science; Kaohsiung Medical University; Kaohsiung Taiwan
7. Division of Gastroenterology; Department of Internal Medicine; Chi-Mei Medical Center; Tainan Taiwan