Walz Bastian, von Renteln Daniel, Schmidt Arthur, Caca Karel
Department of Gastroenterology, Hepatology and Oncology, Klinikum Ludwigsburg, Ludwigsburg, Germany.
Gastrointest Endosc. 2011 Jun;73(6):1288-91. doi: 10.1016/j.gie.2011.01.052. Epub 2011 Apr 8.