1. Department of Gastroenterology; Ren-Ai branch; Taipei City Hospital; Taipei Taiwan
2. Department of Psychology; National Chengchi University; Taipei Taiwan
3. Department of Microbiology; National Taiwan University; College of Medicine; Taipei Taiwan
4. Graduate Institute of Clinical Medicine; National Taiwan University; College of Medicine; Taipei Taiwan
5. Department of Internal Medicine; National Taiwan University Hospital; Taipei Taiwan
6. Hepatitis Research Center; National Taiwan University; College of Medicine and National Taiwan University Hospital; Taipei Taiwan
7. Department of Medical Research; National Taiwan University; College of Medicine and National Taiwan University Hospital; Taipei Taiwan