1. Institute of Pathology; University Medical Center Freiburg; Freiburg Germany
2. Comprehensive Cancer Center Freiburg; Freiburg Germany
3. German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ); Heidelberg Germany
4. Clinic for General and Visceral Surgery; University Medical Center Freiburg; Freiburg Germany
5. Institute for Molecular Medicine and Cell Research; University of Freiburg; Freiburg Germany
6. Clinic for Surgery; UKSH Campus Lübeck; Lübeck Germany