Document Type : Original Article
Authors
1 Associate Professor of pediatric gastroenterology, Department of Pediatrics, Ain Shams University, Egypt.
2 Professor of Pediatrics, Department of Pediatrics, Ain Shams University, Egypt
3 Department of pediatrics, El-Minia faculty of medicine
4 Assistant lecturer of pediatric, Departement of pediatrics , Minia university, Egypt
5 Public health department, faculty of medicine,minia university
6 Pediatrics department, Faculty of Medicine, Minia University, Minia, Egypt
Abstract
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