title: Letter: Chronic low-level leaf exposure and mental retardation.
mesh_terms: D001722:Birth Order; D002648:Child; D004781:Environmental Exposure; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000139:chemically induced*; D007854:Lead / Q000032:analysis / Q000097:blood; D007855:Lead Poisoning / Q000150:complications*; D008423:Maternal Age; D012606:Scotland; D012923:Social Class; D014877:Water Pollution, Chemical; D014881:Water Supply / Q000032:analysis
chemical_list: D007854:Lead