1. Proton Therapy Center Santa Chiara Hospital Trento Italy
2. Radiation Oncology Center, Department of Experimental, Diagnostic and Specialty Medicine, DIMES University of Bologna Bologna Italy
3. Department of Pediatrics University of Bologna Bologna Italy
4. Pediatric Neuro‐Oncology Unit Meyer Children's Hospital Florence Italy
5. Pediatric Neurosurgery, Institute of Neurological Science IRCCS Bellaria Hospital Bologna Italy
6. Department of Neurosurgery Meyer Children's Hospital Florence Italy
7. Pediatric Neuroradiology of Institute of Neurological Science IRCCS Bellaria Hospital Bologna Italy
8. Department of Biomedical and Neuromotor Sciences, Pathology Department University of Bologna IRCCS Bellaria Hospital Bologna Italy
9. Department of Radiological, Oncological and Anatomo‐Pathological Sciences Sapienza University of Rome Rome Italy
10. Pediatric Radiation Oncology Department Massachusetts General Hospital Boston Massachusetts USA