1. Division of Gastroenterology and Hepatology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
2. Department of Internal Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
3. Graduate Institute of Clinical Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
4. Department of Medicine, National Taiwan University Cancer Center, National Taiwan University College of Medicine, Taipei, Taiwan
5. Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
6. Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
7. Microbiome Research Centre, St George & Sutherland Clinical School, University of New South Wales, Sydney, NSW, Australia