Hindy Pierre, Parvin Russell, Hanna Kayane, Gress Frank
Division of Hepatology and Gastroenterology, State University of New York Downstate Medical Center, Brooklyn, New York, USA.
Gastrointest Endosc. 2011 Aug;74(2):439-41. doi: 10.1016/j.gie.2010.11.035. Epub 2011 Jun 25.