International Journal of Preventive Medicine (Int J Prev Med)2008-78023720120517721721ENKnowledge Utilization Research Centre (KURC), Tehran University of Medical SciencesProfessor of Epidemiology, Knowledge Utilization Research Centre (KURC), and School of Public Health, Tehran University of Medical Sciences, Tehran, Iran2012051620120517-http://ijpm.mui.ac.ir/index.php/ijpm/article/view/721http://ijpm.mui.ac.ir/index.php/ijpm/article/download/721/603