1. Department of Neurosurgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA;
2. Department of Neurosurgery, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA;
3. David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA;
4. Faculty of Medicine, Heidelberg University, Heidelberg, Germany;
5. Hopp Children's Cancer Center Heidelberg (KiTZ), Heidelberg, Germany;
6. Clinical Cooperation Unit Pediatric Oncology, German Cancer Research Center (DKFZ) and German Consortium for Translational Cancer Research (DKTK), Heidelberg, Germany;
7. Department of Neurosurgery, University Medicine Rostock, Rostock, Germany;
8. Department of Neurosurgery, University of Texas Medical Branch, Galveston, Texas, USA;
9. John A. Paulson School of Engineering & Applied Sciences, Harvard University, Allston, Massachusetts, USA