1. Department of Epidemiology, The Netherlands Cancer Institute, Amsterdam, The Netherlands;
2. Clinical Trial Service Unit, Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom;
3. Netherlands Comprehensive Cancer Organization, Utrecht, The Netherlands;
4. Department of Hematology, and
5. Department of Radiation Oncology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands;
6. Department of Clinical Oncology, Leiden University Medical Center, Leiden, The Netherlands;
7. Oxford Cancer Centre, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom; and
8. Department of Radiation Oncology, The Netherlands Cancer Institute, Amsterdam, The Netherlands