1. Otolaryngology—Head and Neck surgery
2. Department of Otolaryngology—Head and Neck Surgery, Ministry of Health, Al-Khobar
3. Internal Medicine, College of Medicine, King Fahad Hospital of the University, Al-Khobar, Imam Abdulrahman Bin Faisal University, Dammam
4. Department of Otorhinolaryngology—Head and Neck Surgery ,Ohud General Hospital, Ministry of Health, AL Medina
5. Department of Otorhinolaryngology—Head and Neck Surgery, Qatif Center Hospital, Ministry of Health, AL Qatif, Saudi Arabia