Document Type : Original Article
Authors
1 Public Health,Faculty of Medicine , Mansoura University ,MANSOURA, Egypt
2 1: Lecturer of public health and occupational medicinePublic Health & Community Medicine Department, Faculty of Medicine, Mansoura University, Egypt.
3 Public Health and Community Medicine Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt
4 Family medicine
Abstract
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