1. Mayo Clinic Heath System Eau Claire Wisconsin USA
2. University of Pittsburgh Medical Center Pittsburgh Pennsylvania USA
3. Department of Biostatistics Graduate School of Public Health University of Pittsburgh Pittsburgh Pennsylvania USA
4. Asian Gastroenterology Institute Hyderabad India
5. Postgraduate Institute of Medical Education and Research Chandigarh India
6. Apollo Gleneagles Hospitals Kolkata Kolkata India
7. Institute of Clinical Medicine Faculty of Medicine Vilnius University Vilnius Lithuania
8. Georgetown University Hospital Washington DC USA
9. Universidad Autónoma de Nueva León Monterrey Mexico
10. Johns Hopkins Medical Institutions Baltimore Maryland USA
11. Hospital Nacional de Itauguá Itaugua Paraguay
12. Cleveland Clinic Cleveland Ohio USA
13. University of Medicine and Pharmacy “Iuliu Hatieganu” Cluj‐Napoca Romania
14. Eastern Maine Medical Center Bangor Maine USA
15. Hospital Nacional “Profesor Alejandro Posadas” Buenos Aires Argentina
16. “Carol Davila” University of Medicine and Pharmacy University Emergency Hospital Bucharest Romania
17. San Raffaele Scientific Institute (IRCCS) Vita Salute San Raffaele University Milan Italy
18. Andrea Hospital Rome Italy
19. Indiana University School of Medicine Indianapolis Indiana USA
20. Attikon University General Hospital Athens Greece
21. Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán‐Universidad Autónoma de Mexico Mexico City Mexico
22. Allegheny Health Network Pittsburgh Pennsylvania USA
23. Hospital General de Argudos “Dr. Cosme Argerich” Buenos Aires Argentina
24. Gastroenterology Department Alicante University General Hospital ISABIAL Alicante Spain
25. Medical University of South Carolina Charleston South Carolina USA
26. Kaiser Permanente Los Angeles California USA
27. The Ohio State University Wexner Medical Center Columbus Ohio USA