Affiliation: | 1.Chirurgie und Enddarmpraxis Duesseldorf, Rheinbabenstraße 5, 40476, Düsseldorf, Germany ;2.Vechtaer Institut für Forschungsförderung VIFF, 49377, Vechta, Germany ;3.Department of Surgery, Clinic of Visceral and Thoracic Surgery, Cantonal Hospital Winterthur, 8400, Winterthur, Switzerland ;4.Department of Anaesthesiology and Pain Medicine, Inselspital Bern, University Hospital, University of Bern, Bern, Switzerland ;5.Department of Procto-Surgery, St. Marien-Krankenhaus Vechta, Teaching Hospital of the Hannover University, 49377, Vechta, Germany ; |