Khan Muhammad Fahad, Novak David, Anain Paul, McDonald James
Department of Gastroenterology, University at Buffalo (Catholic Health System), Sisters of Charity Hospital, Buffalo, New York 14225, USA.
Gastrointest Endosc. 2009 Dec;70(6):1271-2. doi: 10.1016/j.gie.2009.04.048. Epub 2009 Oct 28.