1. Department of Medicine Hualien Tzu Chi HospitalBuddhist Tzu Chi Medical Foundation and Tzu Chi University Hualien Taiwan
2. School of Post‐Baccalaureate Chinese Medicine Tzu Chi University Hualien Taiwan
3. Department of Gastroenterology and Hepatology College of Medicine and Public Health Flinders University Adelaide South Australia Australia
4. Division of Gastroenterology Washington University School of Medicine St Louis Missouri USA
5. Institute of Medical Sciences Tzu Chi University Hualien Taiwan