1. Department of Otolaryngology – Head and Neck Surgery, King Fahad Central Hospital, Jazan, Saudi Arabia
2. Department of Medicine, Faculty of Medicine, Jazan University, Jazan, Saudi Arabia
3. Department of Otolaryngology – Head and Neck Surgery, Prince Mohammed Bin Abdulaziz for National Guard, Medina, Saudi Arabia
4. Department of Medicine, College of Medicine, Majmaah University, Al Majma’ah, Saudi Arabia
5. Department of Medicine, Faculty of Medicine, Najran University, Najran, Saudi Arabia