1. King Saud bin Abdulaziz University for Health Sciences , Riyadh , Saudi Arabia
2. Division of Otolaryngology-Head and Neck Surgery , Department of Surgery, King Abdulaziz Medical City, , Riyadh , Saudi Arabia
3. Ministry of National Guard Health Affairs , Department of Surgery, King Abdulaziz Medical City, , Riyadh , Saudi Arabia
4. Department of Otolaryngology-Head and Neck Surgery , College of Medicine, , Riyadh , Saudi Arabia
5. King Saud University , College of Medicine, , Riyadh , Saudi Arabia