| Affiliation: | 1. Department of Medicine, Pennsylvania Hospital, University of Pennsylvania Health System, Philadelphia, Pennsylvania;2. Division of Gastroenterology, Department of Medicine, Hospital of the University of Pennsylvania, University of Pennsylvania Health System, Philadelphia, Pennsylvania;1. Department of Gastroenterology Hepatopancreatology and Digestive Oncology, Erasme Hospital, Brussels, Belgium;2. Department of Pathology, Erasme Hospital, Brussels, Belgium;1. Department of Surgery, State University of New York, Downstate Medical Center Brooklyn, New York;2. Department of Surgery, Kings County Medical Center Brooklyn, New York;1. Division of Gastroenterology, University of Colorado-Denver, Aurora, Colorado;2. Division of Gastroenterology and Hepatology, University of Florida, Gainesville, Florida |
