1. Department of Radiation Oncology, University of California San Francisco, San Francisco, CA
2. American University of Beirut Medical Center, Beirut, Lebanon
3. Department of Biostatistics, Princess Margaret Cancer Centre, University of Toronto, Toronto, ON, Canada
4. Clinical Cooperation Unit—Translational Radiation Oncology, National Center for Tumoral Diseases NCT Heidelberg, German Cancer Research Center (DKFZ), Heidelberg University Hospital, Heidelberg, Germany
5. Department of Radiation Oncology, University of Pittsburgh Medical Center, Pittsburgh, PA
6. Department of Oncology, Division of Radiation Oncology, Queen's University, Kingston, ON, Canada
7. Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Philadelphia, PA
8. Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
9. Collaboration for Cancer Outcomes, Research and Evaluation (CCORE), Ingham Institute, UNSW Sydney, Liverpool, NSW, Australia
10. Liverpool and Macarthur Cancer Therapy Centres, Western Sydney University, Campbelltown, NSW, Australia
11. The George Institute for Global Health, UNSW Sydney, Newtown, NSW, Australia
12. International Atomic Energy Agency, Vienna, Austria
13. Ghent University Hospital and Ghent University, Ghent, Belgium
14. Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada
15. Department of Radiation Oncology, University of Toronto, ON, Canada
16. Department of Urology, University of California San Francisco, San Francisco, CA