1. Department of Psychosocial Research and Epidemiology Netherlands Cancer Institute Amsterdam the Netherlands
2. Department of Medical Oncology University Medical Center Groningen Groningen the Netherlands
3. Department of Radiation Oncology Netherlands Cancer Institute Amsterdam the Netherlands
4. Department of Medical Oncology Erasmus Medical Center Cancer Institute Rotterdam the Netherlands
5. Department of Urology Radboud University Medical Center Nijmegen the Netherlands
6. Department of Medical Oncology, Cancer Center University Medical Center Utrecht Utrecht the Netherlands
7. Department of Radiation Oncology Dr. Bernard Verbeeten Institute Tilburg the Netherlands
8. Department of Radiation Oncology Curie Institute Paris France
9. Department of Radiation Oncology Academic Medical Center Amsterdam the Netherlands
10. Department of Radiation Oncology VU University Medical Center Amsterdam Amsterdam the Netherlands
11. Department of Urology University Medical Center Groningen, University of Groningen Groningen the Netherlands
12. Department of Radiotherapy Catharina Hospital Eindhoven the Netherlands
13. Department of Medical Oncology Jeroen Bosch Hospital 's‐Hertogenbosch the Netherlands
14. Department of Radiotherapy Maastro Clinic Maastricht the Netherlands
15. Department of Medical Oncology Maastricht University Medical Center Maastricht the Netherlands
16. Department of Biostatistics Netherlands Cancer Institute Amsterdam the Netherlands
17. Institute of Biostatistics and Registry Research, Brandenburg Medical School–Theodor Fontane Neuruppin Germany