1. Division of Gastroenterology, Department of Internal Medicine, Wan Fang Hospital Taipei Medical University Taipei Taiwan
2. Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, College of Medicine Taipei Medical University Taipei Taiwan
3. Graduate Institute of Chemical Engineering National Taipei University of Technology Taipei Taiwan
4. Graduate Institute of Biochemical and Biomedical Engineering National Taipei University of Technology Taipei Taiwan