1. Department of Neurosurgery, University Hospital, Goethe-University, 60528 Frankfurt am Main, Germany
2. Dr. Senckenberg Institute of Pathology, University Hospital Frankfurt, 60528 Frankfurt am Main, Germany
3. German Cancer Consortium (DKTK), Partner Site Frankfurt/Mainz, 60528 Frankfurt am Main, Germany
4. Frankfurt Cancer Institute (FCI), Goethe University Frankfurt, 60528 Frankfurt am Main, Germany
5. Georg-Speyer-Haus, Institute for Tumor Biology and Experimental Therapy, 60528 Frankfurt am Main, Germany
6. German Cancer Research Center (DKFZ), 69120 Heidelberg, Germany