1. American Society for Radiation Oncology (ASTRO) ASTRO Model Policies: Proton Beam Therapy (PBT) https://www.astro.org/uploadedFiles/Main_Site/Practice_Management/Reimbursement/ASTRO%20PBT%20Model%20Policy%20FINAL.pdf
2. NHS England Proton Beam Therapy https://www.england.nhs.uk/commissioning/spec-services/highly-spec-services/pbt/
3. Disease control after reduced volume conformal and intensity modulated radiation therapy for childhood craniopharyngioma;Merchant;Int J Radiat Oncol Biol Phys,2013
4. St. Jude Children's Research Hospital RT2CR: Limited Surgery and Proton Beam Radiation Therapy in Treating Younger Patients With Brain Tumors https://www.stjude.org/research/clinical-trials/rt2cr-radiology.html
5. Pediatric Brain Tumor Consortium Palbociclib Isethionate in Treating Younger Patients With Recurrent, Progressive, or Refractory Central Nervous System Tumors https://clinicaltrials.gov/ct2/show/NCT02255461