Neumann Helmut, Meier Peter N
Department of Medicine I University Hospital, Erlangen, Germany.
Department of Gastroenterology and Endoscopy Diakoniekrankenhaus Henriettenstiftung gGmbH, Hannover, Germany.
Dig Endosc. 2016 Jul;28(5):534-6. doi: 10.1111/den.12652.