1. Department of Surgery, Medical School, Al Baha University, Al Baha, Saudi Arabia
2. Otolaryngiology/Head and Neck section, Department of Surgery, King Abdulaziz Medical City, Ministry of National Guard, Jeddah, Saudi Arabia
3. King Saud Bin Abdulaziz University, Jeddah, Saudi Arabia
4. King Abdullah International Medical Research Center, Jeddah, Saudi Arabia
5. Medical Oncology Section, King Abdulaziz Medical City, Ministry of National Guard, Jeddah, Saudi Arabia
6. Radiation Oncology Department, Comprehensive Cancer Center, King Fahad Medical City, Riyadh, Saudi Arabia
7. Medical Imaging Department, King Abdulaziz Medical City, Ministry of National Guard, Jeddah, Saudi Arabia
8. Radiation Oncology Section, King Abdulaziz Medical City, Ministry of National Guard, Jeddah, Saudi Arabia
9. Department of Medicine, Medical School, Al Baha University, Al Baha, Saudi Arabia