1 Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany.
2 Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany; German Centre for Infection Research, partner-site Hannover-Braunschweig, Germany.
3 Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, Hannover, Germany; German Centre for Infection Research, partner-site Hannover-Braunschweig, Germany. Electronic address: [email protected].