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Abstract
Mesh: See more » Data CollectionDemographyEthnic GroupsHealth SurveysHumansUnited Kingdom
Year: 1993 PMID: 8274942 PMCID: PMC1679545 DOI: 10.1136/bmj.307.6918.1564
Source DB: PubMed Journal: BMJ ISSN: 0959-8138