1. Assistance Publique-Hôpitaux de Marseille; Paediatric Neurosurgery Unit; La Timone Hospital; Marseille; France
2. Assistance Publique-Hôpitaux de Marseille; Pathology and Neuropathology Unit and AP-HM Tumour Bank; La Timone Hospital; Marseille; France
3. Assistance Publique-Hôpitaux de Marseille; Transfer Laboratory of Biological Oncology; Marseille; France
4. Assistance Publique-Hôpitaux de Marseille; Epidemiology Unit; La Timone Hospital; Marseille; France