1. Department of Otorhinolaryngology, Head & Neck Surgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
2. Ear Nose and Throat Department, Head and Neck and Skull Base Center, King Abdullah Medical City (KAMC-HC), KSA, Makkah, Saudi Arabia
3. Department of Ophthalmology & Otolaryngology, Umm Al-Qura University, KSA, Makkah, Saudi Arabia