1. Division of Gastroenterology and Hepatology, Department of Internal Medicine Taipei Medical University Hospital Taipei Taiwan
2. Department of Internal Medicine, School of Medicine, College of Medicine Taipei Medical University Taipei Taiwan
3. Taipei Cancer Center Taipei Medical University Taipei Taiwan
4. TMU Research Center for Digestive Medicine Taipei Medical University Taipei Taiwan
5. Division of Gastroenterology and Hepatology, Department of Medicine Taipei Veterans General Hospital Taipei Taiwan
6. Department of Internal Medicine, School of Medicine, College of Medicine National Yang Ming Chiao Tung University Taipei Taiwan
7. Institute of Clinical Medicine, School of Medicine National Yang Ming Chiao Tung University Taipei Taiwan
8. Hospitalist Ward, Department of Medicine Taipei Veterans General Hospital Taipei Taiwan