1. Division of Pediatric HematologyOncology and Stem Cell TransplantationMedical FacultyRWTH Aachen University Aachen Germany
2. Department of Pediatric Hematology and OncologyUniversity Hospital Essen Essen Germany
3. Institute of Human GeneticsUniversity Hospital Essen Essen Germany
4. Hopp Children's Cancer Center at the NCT Heidelberg (KiTZ); Department of Pediatric Oncology, Hematology, and Immunology, Heidelberg University Hospital; and Division of Pediatric Neurooncology, German Cancer Research Center (DKFZ), German Consortium for Translational Cancer Research (DKTK) Heidelberg Germany
5. Department of NeuropathologyHeidelberg University Hospital Heidelberg Germany
6. Department of NeuropathologyRWTH Aachen University Aachen Germany
7. Department of Diagnostic and Interventional NeuroradiologyRWTH Aachen University Aachen Germany