1. Metrology Research Centre National Research Council of Canada Ottawa Ontario Canada
2. Department of Radiation Oncology Miami Cancer Institute Miami Florida USA
3. Department of Radiation Oncology Houston Methodist Hospital Houston, Texa USA
4. Department of Radiation Oncology, Sharett Institute of Oncology, Hadassah Medical Center Hebrew University of Jerusalem Jerusalem Israel
5. UT Southwestern Medical Center Dallas, Texa USA
6. Department of Radiation Medicine and Applied Sciences UC San Diego School of Medicine San Diego California USA
7. Department of Radiation Oncology University of Virginia Charlottesville Virginia USA
8. Department of Radiation Oncology University of Nebraska Medical Center Omaha Nebraska USA
9. Department of Radiation Physics UT M.D. Anderson Cancer Center Houston, Texa USA
10. Department of Radiation Oncology University of Toronto Toronto ON Canada
11. Department of Medical Physics Odette Cancer Centre Sunnybrook Health Sciences Centre Toronto Ontario Canada
12. Département de radio‐oncologie CIUSSS de l'Est‐de‐l'Île‐de‐Montréal – Hôpital Maisonneuve‐Rosemont Montreal Quebec Canada