1. Neuro-Oncology Unit, Department of Pediatric Oncology, Meyer Children's University Hospital, Florence, Italy
2. Medical Genetics Unit, Meyer Children's University Hospital, Florence, Italy
3. Radiation Oncology Unit, Azienda Universitaria Ospedaliera Careggi, Florence, Italy
4. Department of Neurosurgery, Policlinico ‘Santa Maria alle Scotte’, Siena, Italy