title: Referring patients abroad for proton therapy.
authors.forename: E
authors.initials: E
authors.lastname: Wilson
mesh_terms: D002817:Chordoma / Q000532:radiotherapy*; D005060:Europe; D006801:Humans; D007391:International Cooperation; D061766:Proton Therapy; D012017:Referral and Consultation / Q000191:economics; D012888:Skull Neoplasms / Q000532:radiotherapy*; D014195:Travel; D014481:United States; D011522:Protons
chemical_list: D011522:Protons