1. Department of Radiation Oncology, University of Toronto, Princess Margaret Cancer Centre, Toronto, ON M5G 2M9, Canada
2. Department of Radiation Oncology, Dalhousie University, Nova Scotia Health, Halifax, NS B3H 4R2, Canada
3. Department of Radiation Oncology, University of Toronto, Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, ON M4N 3M5, Canada
4. Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
5. Department of Radiation Oncology, University of Texas Southwestern, Dallas, TX 75235, USA
6. Department of Oncology, Odense University Hospital, 5000 Odense, Denmark
7. Department of Radiotherapy, Division Imaging and Oncology, University Medical Centre, 3584 CX Utrecht, The Netherlands
8. Department of Radiotherapy, The Christie NHS Foundation Trust, Manchester M20 4BX, UK
9. Department of Radiation Oncology, King Hussein Cancer Center, Amman 11941, Jordan
10. GenesisCare, Alexandria, NSW 2015, Australia
11. Department of Radiation Oncology, Fiona Stanley Hospital, Perth, WA 6150, Australia
12. GenesisCare, Perth, WA 6150, Australia
13. Department of Radiotherapy and Oncology, Manipal Comprehensive Cancer Care Centre, Kasturba Medical College, Manipal Academy of Higher Education, Manipal 576104, India
14. Department of Radiation Oncology, University Hospital Tübingen, 72076 Tübingen, Germany
15. Medical Affairs and Clinical Research, Linac-Based RT, Elekta Milan, 20864 Lombardy, Italy