1. Johns Hopkins Medical Institute, Baltimore, MD, USA
2. Department of Hepatology, Division of Liver, and Pancreatico-Biliary Disorders, University Hospital Gastuisberg, University of Leuven, Leuven Belgium
3. Aarhus University Hospital, Aarhus, Denmark
4. Department of Surgery, The Chinese University of Hong Kong, Prince of Wales Hospital, Hong Kong SAR, China
5. Department of Surgery, University of Sao Paulo, Sao Paulo, Brazil
6. Unit of Gastroenterology and Digestive Endoscopy, AUSL Bologna Bellaria-Maggiore Hospital, Bologna, Italy
7. Endoscopy Service, Department of Diagnostic and Therapeutic Services, Mediterranean Institute for Transplantation and Advanced Specialized Therapies (ISMETT), Palermo, Italy
8. Center for Interventional Endoscopy, Florida Hospital, Orlando, FL, USA
9. Winthrop University Hospital, Mineola, NY, USA
10. Hospital Universitario Rio Hortega, Valladolid, Spain
11. Division of Gastroenterology and Hepatology, Medical University of South Carolina, Charleston, SC, USA
12. Division of Gastroenterology and Hepatology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA