1. Division of Gastroenterology, Hepatology and Nutrition, Ohio State University, Columbus, Ohio, USA;
2. Department of Biomedical Informatics, Ohio State University, Columbus, Ohio, USA;
3. Division of Internal Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA;
4. University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA;
5. MedStar Washington Hospital Center, Washington, District of Columbia, USA;
6. Asian Institute of Gastroenterology, Hyderabad, Telangana, India;
7. Postgraduate Institute of Medical Education & Research, Chandigarh, Punjab, India;
8. Apollo Gleneagles Hospitals Kolkata, Kolkata, India;
9. Division of Gastroenterology, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA;
10. Universidad Autónoma de Nueva León, Monterrey, Mexico;
11. Division of Gastroenterology, Digestive Diseases Institute, Cleveland Clinic, Cleveland, Ohio, USA;
12. University of Medicine and Pharmacy “Iuliu Hatieganu,” Cluj-Napoca, Romania;
13. Eastern Maine Medical Center, Bangor, Maine, USA;
14. Hospital Nacional “Profesor Alejandro Posadas”, Buenos Aires, Argentina;
15. University of Medicine and Pharmacy, Bucharest, Romania;
16. San Raffaele Scientific Institute, Vita Salute San Raffaele University, Milan, Italy;
17. Indiana University School of Medicine, Indianapolis, Indiana, USA;
18. Attikon University General Hospital, Athens, Greece;
19. Hospital General de Agudos Dr. Cosme Argerich, Buenos Aires, Argentina;
20. Investigación Sanitaria y Biomédica de Alicante (ISABIAL—Fundación FISABIO), Alicante, Spain;
21. Kaiser Permanente, Oakland, California, USA;
22. University of Southern California, Los Angeles, California, USA;
23. Department of Gastroenterology, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán-Universidad Autónoma de Mexico, Mexico City, Mexico.