title: Population sampling for studies of long-term residential exposure to air-borne lead: migration problems identified from electoral registrations.
mesh_terms: D000393:Air Pollutants / Q000097:blood*; D004739:England; D005260:Female; D006801:Humans; D007854:Lead / Q000097:blood*; D011157:Population Dynamics; D011159:Population Surveillance; D012494:Sampling Studies; D014505:Urban Population
chemical_list: D000393:Air Pollutants; D007854:Lead