hossein shahnazi department of health education and promotion, school of public health, isfahan university of medical sciences, isfahan, ir iran mehri hosseintalaei department of health education and promotion, school of public health, isfahan university of medical sciences, isfahan, ir iran; department of health education and promotion, school of public health, isfahan university of medical sciences, isfahan, ir iran. tel: +98-9133360148, fax: +98-3136688628 fatemeh esteki ghashghaei neurosciences research center, cardiovascular research institute, isfahan university of medical sciences, isfahan, ir iran abdurrahman charkazi department of public health, school of health, golestan university of medical sciences, gorgan, ir iran yahya yahyavi faculty of medicine, tabriz university of medical sciences, tabriz, ir iran gholamreza sharifirad department of public health, school of health, qom university of medical sciences, qom, ir iran