Rex Douglas K, Hassan Cesare, Bourke Michael J
Division of Gastroenterology/Hepatology, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Digestive Endoscopy Unit, Catholic University, Rome, Italy.
Gastrointest Endosc. 2017 Aug;86(2):253-263. doi: 10.1016/j.gie.2017.03.1546. Epub 2017 Apr 7.