1. Department of Pediatric Neurosurgery, Necker Hospital, APHP, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
2. Department of Neuropathology, Sainte-Anne Hospital, Paris, France
3. Department of Pathology, Jean Minjoz Hospital, Besançon, France
4. Department of Pathology, Lariboisière Hospital, APHP, Paris, France
5. Department of Oncogenetics, Curie Institute, Paris, France
6. Department of Pathology, Rouen University Hospital, Rouen, France
7. Department of Pathology
8. Department of Pediatric Neurosurgery, Pellegrin Hospital, Bordeaux, France
9. Department of Pediatric Otorhinolaryngology, Nancy Hospital, Nancy, France
10. Department of Pathology, Amiens Hospital, Amiens, France
11. Department of Radiation Oncology & Proton Centre, Institut Curie, Paris and Orsay, France
12. Department of Radiotherapy, Gustave Roussy Institute, Villejuif, France
13. Department of Pediatric Neurosurgery, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
14. Department of Neurosurgery, Lariboisière Hospital, APHP, Paris, France