1. Section on Gastroenterology Wake Forest University Winston‐Salem North Carolina
2. Division of Gastroenterology University of Michigan Ann Arbor Michigan
3. Johns Hopkins University Bloomberg School of Public Health Baltimore Maryland
4. Endocrinology Section MetroHealth Medical Center Cleveland Ohio
5. May Clinic Rochester Minnesota
6. Center for Neurogastroenterology Johns Hopkins Bayview Medical Center Baltimore Maryland
7. California Pacific Medical Center San Francisco California
8. Section of Gastroenterology Temple University Philadelphia Pennsylvania
9. Digestive and Liver Health University of Louisville Louisville Kentucky
10. Division of Gastroenterology Texas Tech University El Paso Texas
11. Division of Gastroenterology Stanford University Palo Alto California
12. Division of Gastroenterology and Hepatology Mayo Clinic Rochester Minnesota
13. National Institute of Diabetes and Digestive and Kidney Diseases Bethesda Maryland