1. Department of Occupational Health and Safety Engineering, School of Public Health, Arak University of Medical Sciences, Arak, Iran
2. Faculty of Geography and Environmental Sciences, Hakim Sabzevari University, Khorasan-Razavi, Iran
3. Environmental Health Research Center, Golestan University of Medical Sciences, Gorgan, Iran
4. Department of Epidemiology, School of Public Health, Arak University of Medical Sciences, Arak, Iran
5. Department of Environmental Health Engineering, Faculty of Health, Arak University of Medical Sciences, Arak, Iran