1. Department of Environmental Health Engineering; Student Research Committee, School of Health, Mashhad University of Medical Sciences; Mashhad Iran
2. Department of Environmental Health Engineering; Health Sciences Research Center, School of Health, Mashhad University of Medical Sciences; Mashhad Iran
3. Department of Environmental Health Engineering, School of Health; Torbat Heydariyeh University of Medical Sciences; Torbat Heydariyeh Iran
4. Department of Chemical Engineering; Faculty of Engineering, Quchan University of Advanced Technology; Quchan, P.O. Box 94771-67335 Iran
5. Department of Biostatistic; Health Sciences Research Center, School of Health, Mashhad University of Medical Sciences; Mashhad Iran