Document Type : Original Article
Authors
1 Professor of Occupational Medicine in the Community, Environmental and Occupational Medicine Department, Faculty of Medicine, Benha University.
2 Assistant Professor of Public Health in the Community, Environmental and Occupational Medicine Department, Faculty of Medicine, Benha University.
3 Lecturer of Public Health in the Community, Environmental and Occupational Medicine Department, Faculty of Medicine, Benha University.
4 Assistant lecturer in Community, Environmental and Occupational medicine department. Faculty of Medicine, Benha University.
Abstract
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