1. Medical University of South Carolina, Charleston
2. Indiana University, Indianapolis
3. Dallas Medical Center, Dallas, Texas
4. Midwest Therapeutic Endoscopy Consultants, St Louis, Missouri
5. University of Minnesota Medical School, Minneapolis
6. Virginia Mason Medical Center, Seattle, Washington
7. Yale University, New Haven, Connecticut
8. University of Alabama, Birmingham
9. National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland
10. Ralph H. Johnson VA Medical Center, Charleston, South Carolina
11. University of Michigan, Ann Arbor
12. Medical University of South Carolina, Charleston12Florida Hospital, Orlando
13. University of North Carolina and Drossman Gastroenterology PLLC, Chapel Hill