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

Leiden University - Leiden University Medical Center (LUMC), affiliation not provided to SSRN, Erasmus University Medical Center Rotterdam - Erasmus MC Cancer Institute, affiliation not provided to SSRN, affiliation not provided to SSRN, Erasmus University Medical Center Rotterdam - Erasmus MC Cancer Institute, University of Amsterdam - University Medical Center, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Erasmus University Rotterdam (EUR), affiliation not provided to SSRN, Leiden University - Department of Medical Oncology,, Erasmus University Medical Center Rotterdam - Erasmus MC Cancer Institute, Leiden University - Leiden University Medical Center (LUMC), Erasmus University Medical Center Rotterdam - Erasmus MC Cancer Institute, Netherlands Cancer Institute, Leiden University - Department of Radiation Oncology, Erasmus University Medical Center Rotterdam - Department of Radiation Oncology and Leiden University - Department of Radiation Oncology