1. Department of General, Visceral and Transplant Surgery; University of Heidelberg; Heidelberg Germany
2. Institute of Medical Biometry and Infomatics IMBI; University of Heidelberg; Heidelberg Germany
3. Department of Medical Oncology; National Center of Tumor Diseases (NCT); University Hospital Heidelberg; Heidelberg Germany
4. Department of Pathology; University of Heidelberg; Heidelberg Germany
5. Department of General; Vascular and Thoracic Surgery; RoMed Klinikum Rosenheim; Rosenheim Germany