Institution: | 1. Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA;2. Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, New Mexico, USA;1. Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, MN, United States;2. Department of Radiology, Mayo Clinic, Rochester, MN, United States;1. Department of General, Visceral and Transplantation Surgery, University of Heidelberg, Im Neuenheimer Feld, Germany;3. Department of Surgery, Halle University Hospital, Martin Luther University Halle-Wittenberg, Halle, Germany;1. Department of Pathology, University of Pittsburgh Medical Center, Pittsburgh, PA, USA;2. Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA;1. Internal Medicine, Faculty of Medicine, Cairo University, Egypt;2. Internal Medicine, Faculty of Medicine, Assiut University, Assiut, Egypt |