1. Department of General, Visceral and Thoracic Surgery, University Hospital Hamburg-Eppendorf , Hamburg , Germany
2. Department of General, Visceral and Thoracic Surgery, St. Elisabethen-Klinikum Ravensburg, Academic Teaching Hospital University of Ulm , Ravensburg , Germany
3. National Center for Tumor Diseases (NCT/UCC) , Dresden , Germany
4. German Cancer Research Center (DKFZ) , Heidelberg , Germany
5. Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden , Dresden , Germany
6. Helmholtz-Zentrum Dresden—Rossendorf (HZDR) , Dresden , Germany
7. Department of Visceral, Thoracic and Vascular Surgery, University Hospital Carl Gustav Carus, Technische Universität Dresden , Dresden , Germany
8. Faculty of Medicine, Technische Universität Dresden , Dresden , Germany