1. Health and Environment Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
2. Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
3. Department of Statistics and Epidemiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
4. Center for the development of interdisciplinary research in Islamic sciences and health sciences, Tabriz University of Medical Sciences, Tabriz, Iran
5. Department of Chemical and Biological Engineering, University of Saskatchewan, Saskatoon, SK, Canada
6. Department of Occupational Health, Urmia University of Medical Sciences, Urmia, Iran