[1] Christie NHS Fdn Trust, Radiotherapy, Manchester, England
[2] Christie NHS Fdn Trust, Christie Med Phys & Engn, Manchester, England
[3] Univ Med Ctr Utrecht, Dept Otorhinolaryngol, Utrecht, Netherlands
[4] Univ Manchester, Div Canc Sci, Manchester, England
[5] Manchester Univ NHS Fdn Trust, Restorat Dent Dept, Manchester, England
[6] Christie NHS Fdn Trust, Proton Clin Outcomes Unit, Manchester, England
[7] Univ Coll London Hosp NHS Fdn Trust, Dept Oncol, London, England
[8] Children NHS Fdn Trust, Dept Paediat Oncol, Great Ormond St Hosp, London, England
[9] Univ Florida, Dept Radiat Oncol, Jacksonville, FL USA
[10] Royal Marsden NHS Fdn Trust, Dept Clin Oncol, London, England
[11] Manchester Univ NHS Fdn Trust, Dept Radiol, Manchester, England
[12] Manchester Acad Hlth Sci Ctr, Div Canc Sci, Manchester, England
[13] Christie NHS Fdn Trust, Dept Clin Oncol, Manchester, England