Markus Cornberg1, Michael P Manns2. 1. Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, German Center for Infection Research (DZIF), Carl Neuberg Strasse 1, 30625 Hannover, Germany. 2. Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, German Center for Infection Research (DZIF), Carl Neuberg Strasse 1, 30625 Hannover, Germany. Electronic address: manns.michael@mh-hannover.de.