conclusions environmental lead exposure is associated with an increased prevalence of dental caries in the us population.
结论:环境性铅接触与美国居民龋齿发生率增多相关。
the hazardous effects of environmental lead exposure on children have become a serious problem involving in public health issue.
环境铅暴露对儿童的危害已成为世界范围内一种严重的公共卫生问题。
objective to explore the effects of environmental lead exposure on immune system in preschool children.
目的探讨环境铅暴露对学龄前儿童免疫系统的影响。
in recent years, the status of environmental lead exposure is very severely. there is a widespread concern on environmental lead hazard especially for children.
近年来,我国的环境铅污染状况严峻,其危害尤其是对儿童健康的危害已引起人们的广泛关注。
objective to study the effect of environmental lead exposure on time to pregnancy(time to pregnancy, ttp) of newly-married women.
目的研究环境铅暴露的新婚女性血铅水平对临床受孕时间(ttp)的影响。