1. Audio-Vestibular Medicine Unit, Otorhinolaryngology Department, King Fahad Hospital of University, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
2. Audio-Vestibular Medicine Unit, Otorhinolaryngology Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt
3. Phoniatrics Unit, Otorhinolaryngology Department, Faculty of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
4. Audio-Vestibular Medicine Unit, Otorhinolaryngology Department, Faculty of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
5. Otorhinolaryngology-head and neck surgery Department, Faculty of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
6. Faculty of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia