Neumann Helmut, Scheidbach Hubert, Mönkemüller Klaus, Pech Maciej, Malfertheiner Peter
Division of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, Magdeburg, Germany.
Gastrointest Endosc. 2009 Nov;70(5):1025-6; discussion 1026. doi: 10.1016/j.gie.2009.06.013. Epub 2009 Aug 21.