1. Departments of Internal Medicine, National Taiwan University Hospital, Taipei City, Taiwan
2. Department of Internal Medicine, Far Eastern Memorial Hospital, New Taipei City Taiwan
3. Department of Chemical Engineering & Materials Science, Yuan-Ze University, Taoyuan, Taiwan
4. Department of Gastroenterology and Inflammatory Bowel Disease Center, University of Ulsan College of Medicine, Asan Medical Center, Seoul, South Korea
5. Department of Gastroenterology and Hepatology, Tokyo Medical and Dental University, Tokyo, Japan
6. Departments of Medical Research, National Taiwan University Hospital, Taipei City, Taiwan