title: Letter: Blood-lead levels, behaviour, and intelligence.
mesh_terms: D002648:Child; D002653:Child Behavior Disorders / Q000139:chemically induced*; D002675:Child, Preschool; D004781:Environmental Exposure; D006801:Humans; D007360:Intelligence / Q000187:drug effects*; D007854:Lead / Q000097:blood* / Q000633:toxicity; D007855:Lead Poisoning / Q000150:complications; D011581:Psychological Tests; D013781:Texas
chemical_list: D007854:Lead