Document Type : Original Article
Authors
1 Otorhinolaryngology Department- Faculty of Medicine – Al Azhar university-cairo
2 Radiology Department- Faculty of Medicine – Al Azhar university-cairo
3 Otorhinolaryngology Department- Faculty of Medicine –Al Azhar University-cairo
4 Otorhinolaryngology department, EL-sahel Teaching Hospital- Cairo-Egypt
Abstract
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