Daram Sumanth R, Reddy Raveena, Tang Shou-Jiang
Division of Digestive Diseases, Department of Medicine, University of Mississippi Medical Center, Jackson, Mississippi 39216, USA.
Gastrointest Endosc. 2012 Jul;76(1):220-2. doi: 10.1016/j.gie.2011.07.023. Epub 2011 Sep 10.