1. Department of Neuropathology, Institute of Pathology, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany;
2. Clinical Cooperation Unit Neuropathology, German Cancer Research Center (DKFZ), Heidelberg, Germany;
3. Department of Medicine I and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria;
4. Department of General Pathology, Institute of Pathology, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany;
5. Institute of Neurology and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria;
6. Experimental Anaesthesiology, University Hospital Ulm, Ulm, Germany;
7. Department of Pediatric Oncology, Hematology and Immunology, University Children's Hospital of Heidelberg, Heidelberg, Germany;
8. Institute of Pathology, Charité-University Medicine Berlin, Berlin, Germany; and
9. Institute of Pathology, Medical University Vienna, Vienna, Austria