1. Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran
2. Department of Occupational Health Engineering, Kurdistan University of Medical Sciences, Sanandaj, Iran
3. Center of Excellence for Occupational Health, and Research Center for Health Sciences, School of Public Health, Hamedan University of Medical Sciences, Hamedan, Iran
4. Department of Occupational Health Engineering, Iran University of Medical Sciences, Tehran, Iran
5. Occupational Health Engineering Department, Faculty of Health and Paramedical Sciences, Zanjan University of Medical Sciences, Zanjan, Iran
6. Department of Epidemiology and Statistics, Tabriz University of Medical Sciences, Tabriz, Iran