1. Department of Neurological Surgery, McGill University, Montreal, Canada
2. Faculty of Medicine, Université Laval, Quebec, Canada
3. Division of Radiation Oncology, CHU de Québec - Université Laval, Quebec, Canada
4. Department of Diagnostic Radiology, CHU de Québec - Université Laval, Quebec, Canada
5. Division of Molecular Biology, Medical Biochemistry and Pathology, CHU de Québec - Université Laval, Quebec, Canada
6. Department of Pediatrics, Division of Hemato-Oncology, CHU de Québec-Université Laval, Quebec, Canada
7. Department of Pediatrics, McGill University, and The Research Institute of the McGill University Health Centre, Montreal, Canada
8. Division of Neurosurgery, Department of Surgery, CHU de Québec - Université Laval, Quebec, Canada
9. The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, Ontario, Canada
10. Division of Haematology/Oncology, Department of Pediatrics, The Hospital for Sick Children, Toronto, Ontario, Canada