Leiden University, Medical Center (LUMC), Department of Pathology, University Hospital Zurich - Department of Pathology and Molecular Pathology, Leiden University, Medical Center (LUMC), Department of Pathology, Leiden University - Department of Vascular and Molecular Imaging, Leiden University, Medical Center (LUMC), Department of Pathology, Medisch Spectrum Twente - Department of Radiation Oncology, Laboratorium Pathologie Oost-Nederland (LabPON) - Department of Pathology, Laboratorium Pathologie Oost-Nederland (LabPON) - Department of Pathology, University Medical Center Utrecht - Department of Radiation Oncology, Maastricht University - Department of Radiation Oncology (MAASTRO), Erasmus University Medical Center Rotterdam - Department of Radiation Oncology, Radiotherapiegroep - Department of Radiation Oncology, Leiden University - Department of Radiation Oncology, Government of the United Kingdom - Department of Clinical Oncology, Barts Health NHS Trust, Department of Cellular Pathology, Peter MacCallum Cancer Centre - Department of Medical Oncology, University of Toronto - Department of Medical Oncology and Hematology, Université Paris XI Sud - Gustave Roussy Cancer Campus, University of Groningen - Department of Obstetrics and Gynecology, Leiden University, Medical Center (LUMC), Department of Pathology, Leiden University - Department of Radiation Oncology, Leiden University - Department of Radiation Oncology, University Hospital Zurich - Department of Pathology and Molecular Pathology and Leiden University, Medical Center (LUMC), Department of Pathology

affiliation not provided to SSRN, affiliation not provided to SSRN, Erasmus University Medical Center Rotterdam - Erasmus MC Cancer Institute, University Medical Center Utrecht - Department of Radiation Oncology, Institute Verbeeten - Department of Radiation Oncology, Radiotherapiegroep, Isala Zwolle, affiliation not provided to SSRN, affiliation not provided to SSRN, Netherlands Cancer Institute, affiliation not provided to SSRN, Catharina Hospital, Haaglanden Medical Center, Maastricht University - Department of Radiation Oncology (MAASTRO), University of Groningen - Department of Obstetrics and Gynecology, Leiden University Medical Centre - Department of Obstetrics and Gynaecology, affiliation not provided to SSRN, affiliation not provided to SSRN, Leiden University - Department of Radiation Oncology and Leiden University - Department of Radiation Oncology

affiliation not provided to SSRN, Leiden University - Department of Radiation Oncology, Spaarne Gasthuis - Spaarne Gasthuis Hospital, affiliation not provided to SSRN, Leiden University, Medical Center (LUMC), Department of Pathology, Leiden University Medical Centre - Department of Obstetrics and Gynaecology, University of Copenhagen - Rigshospitalet, University of Copenhagen - Copenhagen University Hospital, University of Copenhagen - Copenhagen University Hospital, Erasmus University Medical Center Rotterdam - Department of Radiation Oncology, Leiden University - Department of Radiation Oncology, Leiden University, Medical Center (LUMC), Department of Pathology and University of Copenhagen - Rigshospitalet

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