1. Department of Otolaryngology—Head and Neck Surgery, Faculty of Medicine, King Saud University, Riyadh, Saudi Arabia
2. Department of Otolaryngology—Head and Neck Surgery, King Saud University Medical City, Riyadh, Saudi Arabia
3. Medical Intern, College of Medicine, Qassim University, Buraydah, Saudi Arabia
4. Department of Anatomical Pathology, Security Forces Hospital, Riyadh, Saudi Arabia
5. Department of Neurosurgery, Faculty of Medicine, King Saud University, Riyadh, Saudi Arabia
6. Oncology Center, University Medical City, King Saud University, Riyadh, Saudi Arabia
7. ENT Department, King Fahd Central Hospital in Jizan, Jazan, Saudi Arabia
8. Department of Pathology, King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia