1. Department of Pathology; Brain Tumor Center Amsterdam/VU University Medical Center; Amsterdam The Netherlands
2. Department of Pathology; Princess Máxima Center for Pediatric Oncology; University Medical Center Utrecht; Utrecht The Netherlands
3. Department of Neuropathology; Institute of Pathology; Ruprecht-Karls-Universität Heidelberg; Heidelberg Germany
4. German Cancer Research Center (DKFZ); Clinical Cooperation Unit Neuropathology; German Cancer Consortium (DKTK); Heidelberg Germany
5. Charité -Universitätsmedizin Berlin; corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health; Department of Neuropathology; Berlin Germany