Leeds Teaching Hospitals NHS Trust, University of Oslo - Oslo University Hospital, Maastricht University - GROW School for Oncology and Reproduction, Maastricht University - GROW School for Oncology and Reproduction, Netherlands Cancer Institute Antoni van Leeuwenhoek, Maastricht University, University of New South Wales (UNSW), Catholic University of the Sacred Heart, Rome, Leeds Teaching Hospitals NHS Trust, University of Oslo - Oslo University Hospital, NHS Foundation Trust - Cambridge University Hospitals, Manchester Academic Health Sciences Centre - The Christie NHS Foundation Trust, Goethe University Frankfurt - University Hospital Frankfurt, RWTH Aachen University - University Medical Center Aachen, Government of the United Kingdom - Oxford University Hospitals NHS Foundation Trust, Champalimaud Foundation, Greater Poland Cancer Centre, Government of the United Kingdom - Hull University Teaching Hospitals NHS Trust, Leeds Teaching Hospitals NHS Trust, University of Leeds - Institute of Medical Research, Cardiff University - School of Engineering, Bank of Cyprus Oncology Centre, University of Oslo, Maastricht University - GROW School for Oncology and Reproduction, Leeds Teaching Hospitals NHS Trust and Independent

University Hospital Zurich, University Hospital Zurich, University of Freiburg, Leeds Teaching Hospitals NHS Trust, The University of Manchester, affiliation not provided to SSRN, University of Zurich, Karolinska Institutet - Karolinska University Hospital, affiliation not provided to SSRN, University of Oslo - Oslo University Hospital, Government of the United Kingdom, Department of Health, National Health Service (NHS), Mount Vernon Cancer Centre Northwood, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, affiliation not provided to SSRN, University of Leeds, affiliation not provided to SSRN, University Hospital Zurich - Department of Radiation Oncology and University Hospital Zurich

affiliation not provided to SSRN, affiliation not provided to SSRN, Catharina Hospital, Medical University of Vienna, Catharina Hospital, Radiotherapiegroep, University of Amsterdam - University Medical Center, affiliation not provided to SSRN, affiliation not provided to SSRN, Netherlands Cancer Institute, affiliation not provided to SSRN, University of Amsterdam - Amsterdam University Medical Centers, University of Oslo - Oslo University Hospital, University of Oslo - Oslo University Hospital, University of Oslo - Oslo University Hospital, Medical University of Vienna, Erasmus University Medical Center Rotterdam - Erasmus MC Cancer Institute, University of Amsterdam - University Medical Center and affiliation not provided to SSRN