1. Pediatric Oncology Unit; Oscar Lambret Center; Lille France
2. Biochemistry and Molecular Biology Department; Lille University Hospital; Lille France
3. Department of Radiology; Oscar Lambret Center; Lille France
4. Vectorology and New Anticancer Treatments UMR CNRS 8203 and Department of Pediatric Oncology; Gustave Roussy and University Paris sud; Villejuif France
5. Department of Molecular Medicine and Translational Research Laboratory; Gustave Roussy; Villejuif France
6. Neuropathology Department; Biology and Pathology Center; Lille University Hospital; Lille France
7. Unité Tumorigénèse et Résistance au Traitement; INSERM U908, Oscar Lambret Center; Lille France
8. Department of Pediatric Neurosurgery; Lille University Hospital; Lille France
9. Groupe d'Etude en Neuropathologie Oncologique Pédiatrique (GENOP) and Neuropathology Department; Biology and CHULille; F-59000 Lille France