1. Research Department of Pathology University College London, UCL Cancer Institute London UK
2. Medical Genomics Research Group University College London, UCL Cancer Institute London UK
3. Department of Histopathology Royal National Orthopaedic Hospital Stanmore UK
4. Department of Neuropathology University of Heidelberg Heidelberg Germany
5. Clinical Cooperation Unit Neuropathology, German Cancer Consortium (DKTK) German Cancer Research Center (DKFZ) Heidelberg Germany
6. Hopp‐Children's Cancer Center (KiTZ) Heidelberg Germany
7. Division of Pediatric Neurooncology, German Cancer Consortium (DKTK) German Cancer Research Center (DKFZ) Heidelberg Germany
8. Department of General Pathology University of Heidelberg Heidelberg Germany