[1] Natl Radiotherapy Trials Qual Assurance Grp, Mt Vernon Canc Ctr, Radiotherapy Phys, Northwood, Middx, England
[2] Clatterbridge Canc Ctr, Clin Oncol, Liverpool, Merseyside, England
[3] Leeds Teaching Hosp NHS Trust, Radiotherapy Phys, Leeds, W Yorkshire, England
[4] Royal Marsden NHS Fdn Trust, Dept Urol, Sutton, Surrey, England
[5] Inst Canc Res, Div Radiotherapy & Imaging, Sutton, Surrey, England
[6] Natl Phys Lab, Metrol Med Phys, Teddington, Middx, England
[7] UCLH NHS Fdn Trust, Radiotherapy Phys, London, England
[8] Barts Hlth NHS Trust, Radiotherapy Phys, London, England
[9] NHS England & NHS Improvement, Canc Programme Care Specialised Commissioning, London 9NHS, England
[10] Royal Marsden NHS Fdn Trust, Lung Unit, London, England