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背景：目前的规定要求对所有幼儿进行铅测定。本研究调查了有关父母对铅暴露危险性以及在他们的孩子身上做铅测定时使用ＰＣＣ的知识。方法：使用一套前瞻性的方法。参与者包括凡有不满６岁小孩的父母。对照参与者的配对是依据地区号码和有一个不满６岁的小孩，通过在参与者的
Background: The current regulations require lead determination for all young children. This study examined the use of PCC by parents in assessing the risk of lead exposure and lead testing in their children. Method: Use a forward-looking approach. Participants include parents who have children under 6 years of age. The pairing of control participants is based on the area code and a child under the age of 6,