1. Otolaryngology-Head and Neck surgery Department, King Saud medical city, Riyadh, Saudi Arabia
2. Radiology department of king abdulaziz university hospital, King Saud University, Riyadh, Saudi Arabia
3. Otolaryngology, King Saud University, Riyadh, Saudi Arabia
4. ENT, King Fahad medical city, Riyadh, Saudi Arabia
5. Otorhinolaryngology-Head and Neck, King Saud University, Riyadh, Saudi Arabia