1. Department of Oncological Urology; University Medical Center Utrecht; Utrecht The Netherlands
2. Department of Urology; The Netherlands Cancer Institute; Amsterdam The Netherlands
3. Department of Oncology; Copenhagen University Hospital; Copenhagen Denmark
4. Department of Epidemiology and Biostatistics; The Netherlands Cancer Institute; Amsterdam The Netherlands
5. Institute of Biostatistics and Registry Research; Brandenburg Medical School Theodor Fontane; Neuruppin Germany
6. Scientific Information Service; The Netherlands Cancer Institute; Amsterdam The Netherlands
7. Princess Máxima Center for Pediatric Oncology; Utrecht The Netherlands