1. Digestive Physiology; Hospices Civils de Lyon and Lyon I University; Inserm U1032; LabTAU; Lyon France
2. Division of Gastroenterology; Washington University School of Medicine; St. Louis MO USA
3. Division of Gastroenterology; Department of Surgical; Oncological and Gastroenterological Sciences; Padua Italy
4. Division of Gastroenterology; Department of Medicine; Northwestern University; Chicago IL USA
5. Department of Gastroenterology; Bordeaux University Hospital, and Université de Bordeaux; Bordeaux France
6. Institute of Digestive Disease; The Chinese University of Hong Kong; Hong Kong China
7. Division of Gastroenterology and Hepatology; Mayo Clinic; Scottsdale AZ USA
8. Division of Gastroenterology; University Clinics for Visceral Surgery and Medicine, Bern University Hospital; Bern Switzerland
9. Department of Surgery; University of Washington; Seattle WA USA
10. Center for Digestive Diseases; Bart's and the London School and Dentistry; London UK
11. Department of Internal Medicine; Israelitic Hospital; University of Hamburg; Hamburg Germany
12. Department of Gastroenterology; Abdominal Center; St. Claraspital; Basel Switzerland
13. Gastroenterology and Hepatology; Academic Medical Center; Amsterdam The Netherlands