1. Department of General, Visceral and Transplantation Surgery; Hannover Medical School; Hannover Germany
2. Department of Anesthesiology and Intensive Care; Hannover Medical School; Hannover Germany
3. Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation; Hannover Medical School; Hannover Germany
4. Department of Pathology; Hannover Medical School; Hannover Germany