1. Occupational Health and Industrial Medicine Department, High Institute of Public Health, Alexandria University, Alexandria, Egypt
2. Biostatistics and Demography Department, Faculty of Graduate Studies for Statistical Research, Cairo University, Giza, Egypt
3. Public Health and Community Medicine at Faculty of Medicine (Girls), Al-Azhar University, Cairo, Egypt
4. Tropical Health Department, High Institute of Public Health, Alexandria University, Alexandria, Egypt
5. Department of Natural Resources Management, Faculty of Environment, Kabul University, Kabul, Afghanistan