Document Type : Original Article
Authors
1 Professor of Occupational Medicine at Community, Environmental and Occupational Medicine department, Faculty of Medicine, Benha University
2 lecturer of public health at Community, Environmental and Occupational Medicine department, Faculty of Medicine, Benha University
3 lecturer of Occupational Medicine at Community, Environmental and Occupational Medicine department, Faculty of Medicine, Benha University
4 Demonstrator of Occupational Medicine at Community, Environmental and Occupational Medicine department, Faculty of Medicine, Benha University
Abstract
Keywords