Document Type : Original Articles
Authors
1 Ophthalmology Department, Faculty of medicine, Aswan University, Aswan, Egypt
2 Demonstrator of Ophthalmology at Luxor university, Luxor, Egypt
3 Department Ophthalmology, Faculty of Medicine, Aswan University, Mansoura, Egypt
4 1Ophthalmology Department, Faculty of medicine, Aswan University, Aswan, Egypt
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