Department of General & Transplant Surgery, University Hospital Tübingen, D-72076 Tübingen, Germany. rami.archid@med.uni-tuebingen.de. National Center for Pleura and Peritoneum, University Hospital Tübingen, D-72076 Tübingen, Germany. rami.archid@med.uni-tuebingen.de. National Center for Pleura and Peritoneum, University Hospital Tübingen, D-72076 Tübingen, Germany. Wiebke.solass@med.uni-tuebingen.de. Institute of Pathology and Neuropathology, University Hospital Tübingen, D-72076 Tübingen, Germany. Wiebke.solass@med.uni-tuebingen.de. Department of Gynecology and Obstetrics, Ruhr-University Bochum, 44625 Herne, Germany. clemens.tempfer@marienhospital-herne.de. Department of General & Transplant Surgery, University Hospital Tübingen, D-72076 Tübingen, Germany. alfred.koenigsrainer@med.uni-tuebingen.de. National Center for Pleura and Peritoneum, University Hospital Tübingen, D-72076 Tübingen, Germany. alfred.koenigsrainer@med.uni-tuebingen.de. Nutrition Unit, Dept. of Anesthesiology, University Hospital Tübingen, D-72076 Tübingen, Germany. micahel.adolf@med.uni-tuebingen.de. Department of General & Transplant Surgery, University Hospital Tübingen, D-72076 Tübingen, Germany. marc.reymond@med.unit-tuebingen.de. National Center for Pleura and Peritoneum, University Hospital Tübingen, D-72076 Tübingen, Germany. marc.reymond@med.unit-tuebingen.de. Department of Upper Gastrointestinal Surgery, UNSW, Liverpool Hospital, Sydney, NSW, 2170, Australia. robert.wilson@unsw.edu.au.