Yoon Sonia S, Rivera Rene, Antignano Louis, Kaul Vivek
Division of Gastroenterology and Hepatology, University of Rochester Medical Center, Rochester, NY 14642, USA.
Gastrointest Endosc. 2011 Dec;74(6):1407-8. doi: 10.1016/j.gie.2011.08.005. Epub 2011 Oct 13.