Affiliation: | 1. Department of Visceral-, Thoracic and Vascular Surgery, Philipps University Marburg, Marburg, Germany 2. Department of General and Visceral Surgery/Coloproctology, HELIOS St. Josefs-Hospital Bochum-Linden, Bochum, Germany 3. Department of Pathology, Philipps University Marburg, Marburg, Germany 4. Department of Surgery and Center of Minimally Invasive Surgery, Kliniken-Essen-Mitte, Henricistrasse 92, 45136, Essen, Germany
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