Affiliation: | a Division of Gastroenterology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA b Department of Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA c Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA d Department of Medicine, University of Puerto Rico, San Juan, Puerto Rico e Department of Digestive Diseases, Hôpital Lariboisière, APHP, University of Paris 7, Paris, France f Cook Endoscopy Inc, Winston-Salem, North Carolina, USA g Institute for Digestive Health and Liver Disease, Mercy Medical Center, Baltimore, Maryland, USA |