Salkic Nermin N, Alibegovic Ervin, Jovanovic Predrag
Department of Gastroenterology and Hepatology, University Clinical Centre Tuzla, Tuzla, Bosnia and Herzegovina.
Gastrointest Endosc. 2013 May;77(5):822-3; discussion 823. doi: 10.1016/j.gie.2013.01.016. Epub 2013 Mar 8.