1. Dr. Henry D. Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, Mount Sinai Medical Center, New York, New York, United States
2. Mount Sinai Beth Israel Medical Center, New York, New York, United States
3. Lehigh Valley Hospital, Allentown, Pennsylvania, United States
4. Temple University School of Medicine, Philadelphia, Pennsylvania, United States
5. University of British Columbia, Vancouver, British Columbia, Canada
6. Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, United States
7. Lahey Clinic, Burlington, Massachusetts, United States
8. NewYork-Presbyterian Hospital/Columbia University, New York, New York, United States
9. Borland-Groover Clinic, Jacksonville, Florida, United States
10. University of Rochester Medical Center, Rochester, New York, United States
11. Montefiore Medical Center, Bronx, New York, United States
12. Parkview Health System, Wayne, Indiana, United States
13. David Geffen School of Medicine at UCLA, Los Angeles, California, United States
14. Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States
15. Brigham and Women’s Hospital, Boston, Massachusetts, United States
16. University of Alberta, Edmonton, Alberta, Canada
17. Crystal Run Healthcare, Middletown, New York, United States
18. University of Utah School of Medicine, Salt Lake City, Utah, United States