1. Department of Occupational Health Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
2. Department of Occupational Health Engineering, School of Health, Tehran University of Medical Sciences, Tehran, Iran
3. Research Center for Health Sciences, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran
4. Department of Epidemiology, Faculty of Biostatistics, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran