1. Department of Otolaryngology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
2. Department of OtolaryngologyHead and Neck Surgery, King Abdulaziz University Hospital, King Saud University, Riyadh, Saudi Arabia
3. Department of Otolaryngology, Research Group of Voice, Swallowing and Communication Disorders, College of Medicine, King Saud University, Riyadh, Saudi Arabia