1. Department of Radiation Oncology; Leuven University Hospital; Leuven Belgium
2. Department of Urology; Leuven University Hospital; Leuven Belgium
3. Department of Radiation Oncology; Gustave Roussy Cancer Campus; Villejuif France
4. Department of Urology; San Raffaele Hospital; Milan Italy
5. Department of Radiation Oncology; San Raffaele Hospital; Milan Italy
6. Department of Urology; Ghent University Hospital; Ghent Belgium
7. Department of Radiation Oncology; Ghent University Hospital; Ghent Belgium
8. Olivia Newton John Cancer Centre; Melbourne Vic. Australia
9. Royal Marsden NHS Foundation Trust; London UK
10. Department of Radiation Oncology; Dana-Farber Cancer Institute; Bringham and Women's Hospital; Boston MA USA
11. Department of Radiology; Ghent University Hospital; Ghent Belgium
12. Department of Oncology; Ghent Maria Middelares Hospital; Ghent Belgium
13. Department of Molecular Imaging, Pathology, Radiotherapy and Oncology, (MIPRO) Center for Oncological Research (CORE); University of Antwerp; Antwerp Belgium
14. Department of Radiation Oncology; Massachusetts General Hospital; Boston MA USA