title: Further evidence of a fall in blood lead levels in Wales.
abstract: Random samples of residents in North Wales, some of whom had been seen in 1976 and others in 1981, were seen again in 1984. Blood lead estimations indicated that there had been a fall of about 5% per year. This is similar to the fall we estimated from two previous studies in Wales and is comparable to changes described in the USA and New Zealand.
mesh_terms: D005500:Follow-Up Studies; D006801:Humans; D007854:Lead / Q000097:blood*; D014852:Wales
chemical_list: D007854:Lead