1. Immunology Unit, Department of Microbiology, Faculty of Medicine Chiang Mai University Chiang Mai Thailand
2. Faculty of Medicine Chiang Mai University Chiang Mai Thailand
3. Department of Surgery School of Medicine, Mae Fah Luang University Chiang Rai Thailand
4. Department of Internal Medicine Weiss Memorial Hospital Chicago Illinois USA
5. Department of Medicine Mount Auburn Hospital/Harvard Medical School Cambridge Massachusetts USA
6. Division of Gastroenterology and Hepatology Stanford University School of Medicine Stanford California USA
7. Division of Gastroenterology and Hepatology Mayo Clinic Florida Jacksonville Florida USA
8. Division of Gastroenterology and Hepatology, Department of Medicine University of Arizona College of Medicine Phoenix Arizona USA
9. Division of Gastroenterology and Hepatology, Department of Internal Medicine Banner University Medical Center Phoenix Arizona USA
10. Division of Gastroenterology and Hepatology, Department of Internal Medicine University of Michigan Ann Arbor Michigan USA
11. Department of Clinical Oncology, and Division of Gastroenterology and Hepatology, Department of Medicine and Therapeutics, Institute of Digestive Diseases The Chinese University of Hong Kong Hong Kong SAR China