1. Department of Otolaryngology-Head and Neck Surgery, King Abdulaziz University Hospital, King Abdulaziz University, Jeddah, Saudi Arabia
2. Department of Otolaryngology-Head and Neck Surgery, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
3. Department of Otolaryngology-Head and Neck Surgery, King Fahd Armed Forces Hospital, Jeddah, Saudi Arabia
4. Department of Otolaryngology-Head and Neck Surgery, King Fahad General Hospital, Al-Baha, Saudi Arabia