Department of Otorhinolaryngology, Head and Neck Surgery, Faculty of Medicine, Alexandria University, Egypt
2.Department of Human Anatomy and Embryology, Faculty of Medicine, Alexandria University, Egypt
3.Department of Otorhinolaryngology, Head and Neck Surgery, Faculty of Medicine, Alexandria University
4.Department of Diagnostic Imaging, Faculty of Medicine, Alexandria University, Egypt
5.Department of Otorhinolaryngology, Head and Neck Surgery, Alexandria University Hospital, Egypt