1. Department of Neuropathology Institute of Pathology Hannover Medical School Hannover Germany
2. Department of Neurosurgery Hannover Medical School Hannover Germany
3. Department of Neurosurgery Otto‐von‐Guericke University Magdeburg Germany
4. Department of Neuropathology Institute of Pathology University Hospital Heidelberg Heidelberg Germany
5. Clinical Cooperation Unit Neuropathology German Cancer Institute (DKFZ) Heidelberg Germany
6. Department of Neurosurgery Krankenhaus Köln Merheim Kliniken der Stadt Köln gGmbH University of Witten/Herdecke Köln Germany