1. Division of Gastroenterology; Department of Internal Medicine; Taipei Tzuchi Hospital; The Buddhist Tzuchi Medical Foundation; Taipei Taiwan
2. School of Medicine; Tzu Chi University; Hualien Taiwan
3. Division of Gastroenterology; Department of Internal Medicine; National Taiwan University College of Medicine and National Taiwan University Hospital; Taipei Taiwan
4. Graduate Institute of Clinical Medicine; National Taiwan University College of Medicine and National Taiwan University Hospital; Taipei Taiwan
5. Hepatitis Research Center; National Taiwan University College of Medicine and National Taiwan University Hospital; Taipei Taiwan
6. Master of Public Health Degree Program; National Taiwan University; Taipei Taiwan
7. Department of Microbiology; National Taiwan University College of Medicine and National Taiwan University Hospital; Taipei Taiwan
8. St Vincent's Hospital; Melbourne Vic. Australia
9. Department of Medical Research; National Taiwan University College of Medicine and National Taiwan University Hospital; Taipei Taiwan