From the Centers for Disease Control. Surveillance of children's blood lead levels--United States, 1991.
D002648:Child; D006801:Humans; D007854:Lead / Q000097:blood*; D007855:Lead Poisoning / Q000097:blood / Q000453:epidemiology*; D011159:Population Surveillance; D014481:United States / Q000453:epidemiology
D007854:Lead