1. Mayo Clinic Florida; Jacksonville Florida
2. Trinity Academic Gastroenterology Group; Tallaght Hospital; Dublin Ireland
3. Kocaeli University Medical Facility; Kocaeli Turkey
4. Digestive Endoscopy Unit; Catholic University of Rome; Rome Italy
5. Division of Gastroenterology; Johns Hopkins University; Baltimore Maryland
6. Department of Internal Medicine; Texas Tech University Health Sciences Center; El Paso Texas
7. Department of Surgical; Oncological and Gastroenterological Sciences; University of Padua; Padua Italy
8. Department of Internal Medicine; University of Genoa; Genoa Italy
9. Centre for Paediatric Gastroenterology; Sheffield Children's Hospital; Sheffield United Kingdom
10. Departments of Medicine; University of Texas Southwestern Medical Center and the VA North Texas Health Care System; Dallas Texas
11. Trinity College Dublin/St James’ Hospital; Trinity Centre for Health Sciences; St James’ Hospital; Dublin Ireland