Zahedan University of Medical Sciences, Zahedan, Iran (Department of Occupational Health, Health Promotion Research Center). hormozym@yahoo.com. Zahedan University of Medical Sciences, Zahedan, Iran (Department of Epidemiology and Biostatistics, Health Promotion Research Center). ansaryalireza@yahoo.com. Zahedan University of Medical Sciences, Zahedan, Iran (Department of Occupational Health, Health Promotion Research Center). rammir277@gmail.com. Zahedan University of Medical Sciences, Zahedan, Iran (Community Medicine Department). Javid_dehghan@yahoo.com. Shiraz University of Medical Sciences, Shiraz, Iran (Department of Health and Nutrition School Library). eftekharif@sums.ac.ir.