1. Department of Radiation Oncology, Stanford Cancer Institute, Stanford, CA;
2. Radiation Oncology, Stanford University School of Medicine, Stanford, CA;
3. Department of Medical Oncology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia;
4. Department of Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX;
5. Department of Radiation Oncology, Princess Margaret Cancer Center, Toronto, ON, Canada;
6. Department of Medical Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia;
7. Department of Radiation Oncology, Dana-Farber Cancer Institute, Boston, MA;
8. Radiation Oncology, Harvard University School of Medicine, Boston, MA;
9. Department of Radiation Oncology, Yale University, New Haven, CT;
10. Tom Baker Cancer Center, Calgary, AB, Canada;
11. Department of Radiation Oncology, University of Turin, Torino, Italy;
12. Department of Medical Oncology and
13. Department of Radiation Oncology, University of Rochester, Rochester, NY;
14. Department of Oncology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark;
15. Department of Radiation Oncology, University of Pennsylvania, Philadelphia, PA;
16. Department of Radiation Oncology, Duke University School of Medicine, Durham, NC;
17. Department of Clinical Oncology, Guy’s Cancer Centre, Guy’s and St Thomas’ NHS Hospital, London, United Kingdom;
18. Department of Radiation Oncology, University of Florida, Gainesville, FL;
19. Department of Radiation Oncology, Mayo Clinic Florida, Jacksonville, FL;
20. Department of Radiation Oncology, The Johns Hopkins University School of Medicine, Baltimore, MD;
21. Department of Clinical Medicine and Surgery, Federico II University, Naples, Italy;
22. Department of Radiation Oncology, Institut Curie, Paris, France;
23. Department of Pathology, Stanford University School of Medicine, Stanford, CA;
24. Department of Radiation Oncology, Munster University, Munster, Germany; and
25. Department of Radiation Oncology, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia