1. Department of Otolaryngology, Head and Neck Surgery, Qatif Central Hospital, Qatif City, Saudi Arabia
2. Department of Otolaryngology, Head and Neck Surgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia
3. Department of Neurosurgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia
4. Department of Otolaryngology, Head and Neck Surgery, Khamis Mushait General Hospital, Khamis Mushait City, Saudi Arabia