McDevitt Patrick J, Moyer Matthew, Mathew Abraham
Division of Gastroenterology and Hepatology, Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania 17033, USA.
Gastrointest Endosc. 2010 Apr;71(4):878-9. doi: 10.1016/j.gie.2009.09.022. Epub 2009 Dec 8.