1 Department of Otolaryngology - Head & Neck Surgery, Sohag University Hospitals, Faculty of Medicine, Sohag University, Sohag, Egypt. dr.mohammedelrabie@gmail.com.
2 Upper Airway Research Laboratory, Center for Discovery and Innovation, Hackensack Meridian Health, 111 Ideation Way, Nutley, NJ, 07110, USA.
3 Department of Otorhinolaryngology - Head & Neck Surgery, Alexandria University, Alexandria, Egypt.