Tabibian James H, Kochman Michael L
Division of Gastroenterology, Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; Center for Endoscopic Education, Innovation, and Training, Departments of Medicine and Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Gastrointest Endosc. 2017 Feb;85(2):454-455. doi: 10.1016/j.gie.2016.03.014. Epub 2016 Mar 11.