Affiliation: | 1. Medical College, King Saud Bin Abdulaziz University for Health Sciences, College of Medicine, King Saud University, Riyadh, Saudi Arabia;2. Department of Otolaryngology – Head & Neck Surgery, College of Medicine, King Saud University, Riyadh, Saudi Arabia;3. Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia |