1. Department of Gastroenterology; Ren-Ai branch; Taipei City Hospital; Taipei Taiwan
2. Department of Psychology; National Chengchi University; Taipei Taiwan
3. Division of Gastroenterology; Department of Internal Medicine; Buddhist Tzu Chi General Hospital; Taipei Branch New Taipei Taiwan
4. School of Medicine; Tzu Chi University; Hualien Taiwan
5. Graduate Institute of Clinical Medicine; National Taiwan University College of Medicine; Taipei Taiwan
6. Department of Internal Medicine; National Taiwan University Hospital; Taipei Taiwan
7. Hepatitis Research Center; National Taiwan University Hospital; Taipei Taiwan
8. Department of Medical Research; National Taiwan University Hospital; Taipei Taiwan