Leeds Teaching Hospitals NHS Trust, Cardiff University - Centre for Trials Research, University of Leeds - Leeds Institute of Clinical Trials Research, University College London, National Radiotherapy Trials QA (RTTQA) Group, National Radiotherapy Trials QA (RTTQA) Group, Independent, University of Leeds - Leeds Institute of Clinical Trials Research, St James’s University Hospital, University of Leeds - Leeds Institute of Clinical Trials Research, University Hospitals Bristol - University Hospitals Bristol and Weston NHS Foundation Trust, Government of the United Kingdom, Department of Health, National Health Service (NHS), Mount Vernon Cancer Centre Northwood, King’s College London, University College London - Department of Medical Physics and Biomedical Engineering, University Hospitals Sussex NHS Foundation Trust, Government of the United Kingdom - Oxford University Hospitals NHS Foundation Trust, NHS Foundation Trust - Royal Marsden Hospital, The University of Manchester - Manchester Cancer Research Centre, University of Leeds - Institute of Medical Research, University of Leeds, University of Leeds - Leeds Institute of Clinical Trials Research, University of Surrey, University Hospitals Sussex NHS Foundation Trust, Leeds Teaching Hospitals NHS Trust, University of Leeds - Institute of Medical Research and Mount Vernon Hospital

Catholic University of the Sacred Heart, Rome, Catholic University of the Sacred Heart, Rome, Catholic University of the Sacred Heart, Rome, Catholic University of the Sacred Heart, Rome, Catholic University of the Sacred Heart, Rome, Azienda Ospedaliera-Universitaria Pisana, Centre Antoine Lacassagne, Peter MacCallum Cancer Centre, Goethe University Frankfurt, Maria Skłodowska-Curie Institute of Oncology, Government of the United Kingdom, Department of Health, National Health Service (NHS), Mount Vernon Cancer Centre Northwood, Maastricht University, Maastricht University, Catholic University of the Sacred Heart, Rome and Università Cattolica del Sacro Cuore, Rome

Government of the United Kingdom - Oxford University Hospitals NHS Foundation Trust, University of Glasgow, University of Leeds, affiliation not provided to SSRN, Government of the United Kingdom, Department of Health, National Health Service (NHS), Mount Vernon Cancer Centre Northwood, University of Edinburgh - Edinburgh Cancer Centre, Bravis Hospital, University of Edinburgh, Catharina Hospital, Erasmus University Rotterdam (EUR), Radboud University Nijmegen - Radboud University Medical Center and University of Oxford