Didden Paul, Spaander Manon C W, Kuipers Ernst J, Bruno Marco J
Department of Gastroenterology and Hepatology, Erasmus Medical Center, Rotterdam, The Netherlands.
Gastrointest Endosc. 2012 Aug;76(2):426-30. doi: 10.1016/j.gie.2012.03.004. Epub 2012 May 31.