Netherlands Cancer Institute, Netherlands Cancer Institute, Netherlands Cancer Institute - Department of Biometrics, St. Antonius Ziekenhuis, Utrecht University - Cancer Center, Catharina Hospital, Catharina Hospital, Centre for Gynaecologic Oncology - Amsterdam, University of Groningen - University Medical Center Groningen (UMCG), Radboud University Nijmegen - Radboud University Medical Center, Netherlands Cancer Institute, Aarhus University - Aarhus University Hospital, Ghent University - Ghent University Hospital, Netherlands Cancer Institute, Netherlands Cancer Institute and Netherlands Cancer Institute - Division of Psychosocial Research and Epidemiology

Adelphi Values, Patient-Centered Outcomes, Adelphi Values, Patient-Centered Outcomes, University of Southampton, Martin Luther University of Halle-Wittenberg - Institute of Health & Nursing Science, University Hospital Regensburg - Center for Clinical Studies, Netherlands Comprehensive Cancer Organisation, University of Leeds, Istituto Nazionale Tumori - IRCCS Fondazione G. Pascale, Andrzej Frycz Modrzewski Kracow University, Netherlands Cancer Institute - Division of Psychosocial Research and Epidemiology, Adelphi Values, Patient-Centered Outcomes, Adelphi Values, Patient-Centered Outcomes, Swansea University, Adelphi Values, Patient-Centered Outcomes, University of Copenhagen, Faculty of Health and Medical Sciences, Department of Public Health, Adelphi Values, Patient-Centered Outcomes, University of Sussex - Brighton and Sussex Medical School and European Organisation for Research and Treatment of Cancer (EORTC)

affiliation not provided to SSRN, Leiden University - Leiden University Medical Center (LUMC), Leiden University - Department of Medical Statistics, Erasmus MC - Brain Tumor Centre, Netherlands Cancer Institute - Division of Psychosocial Research and Epidemiology, affiliation not provided to SSRN, affiliation not provided to SSRN, KU Leuven, European Organisation for Research and Treatment of Cancer (EORTC), EORTC Headquarters, University of Bonn - University Hospital Bonn (UKB), University Hospital Zurich, affiliation not provided to SSRN, Université de Lille - Laboratoire Protéomique, affiliation not provided to SSRN, affiliation not provided to SSRN, Medical University of Vienna, affiliation not provided to SSRN, affiliation not provided to SSRN, International BrainTumour Alliance, IRCCS Regina Elena National Cancer Institute, affiliation not provided to SSRN, University of Amsterdam - Amsterdam University Medical Centers, affiliation not provided to SSRN, University Hospital Zurich, Universitätsklinikum Leipzig, University of Lausanne, Heidelberg University - University Hospital Heidelberg, University Hospital Zurich, Leiden University - Leiden University Medical Center (LUMC) and affiliation not provided to SSRN