1. Department of Pathology, Erasmus MC Cancer Institute University Medical Center Rotterdam Rotterdam The Netherlands
2. Department of Pathology University Hospital Ghent Ghent Belgium
3. Department of Neurosurgery, Erasmus MC Cancer Institute University Medical Center Rotterdam Rotterdam The Netherlands
4. Department of Neurology, Erasmus MC Cancer Institute University Medical Center Rotterdam Rotterdam The Netherlands
5. Department of Radiology, Erasmus MC Cancer Institute University Medical Center Rotterdam Rotterdam The Netherlands
6. Hopp Childrens Cancer Center (KiTZ) Heidelberg Germany
7. German Cancer Research Center (DKFZ) and German Cancer Consortium (DKTK) Heidelberg Germany
8. Princess Máxima Center for Pediatric Oncology Utrecht The Netherlands
9. University Medical Center Utrecht Utrecht The Netherlands
10. Department of Pathology Leiden University Medical Center Leiden The Netherlands