1. Department of Radiation Oncology, King Hussein Cancer Center, Amman 11941, Jordan
2. Department of Radiation Oncology, Odette Cancer Centre, University of Toronto, Toronto, ON M4N3M5, Canada
3. Faculty of Medicine, University of Toronto, Toronto, ON M5S1A1, Canada
4. Department of Radiation Oncology, Burjeel Medical City, Abu Dhabi 7400, United Arab Emirates
5. Emirates Oncology Society, Dubai 2299, United Arab Emirates
6. Department of Nuclear Medicine, King Hussein Cancer Center, Amman 11941, Jordan
7. Department of Radiation Oncology, Comprehensive Cancer Center, King Fahad Medical City, Riyadh 11525, Saudi Arabia
8. Department of Radiation Oncology, King Faisal Specialist Hospital and Research Center Riyadh, Riyadh 11211, Saudi Arabia
9. Radiation Oncology, Princess Noorah Oncology Center, King Abdulaziz Medical City, Ministry of National Guard Health Affairs-Western Region, Jeddah 21556, Saudi Arabia
10. College of Medicine, King Saud Bin Abdulaziz University for Health Sciences, Jeddah 11481, Saudi Arabia
11. Department of Radiation Oncology, King Fahad Specialist, Dammam 31444, Saudi Arabia
12. Department of Radiation Oncology, National Cancer Institute, Cairo University, Cairo 11796, Egypt
13. Department of Radiation Oncology, Kuwait Cancer Control Center, Kuwait 42262, Kuwait
14. Clinical Oncology Department, Kasr Al-Ainy Center of Clinical Oncology and Nuclear Medicine, Kasr Al-Ainy School of Medicine, Cairo University, Cairo 12613, Egypt
15. Radiation Medicine Program, Princess Margaret Cancer Centre, University Health Network, University of Toronto, Toronto, ON M5G2M9, Canada