Letter: Blood-lead and domestic-water lead.
D006801:Humans; D007854:Lead / Q000032:analysis* / Q000097:blood; D014852:Wales; D014873:Water Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
D014873:Water Pollutants; D014874:Water Pollutants, Chemical; D007854:Lead