R Smith. Show Affiliations »
Abstract
Mesh: See more » HumansPublic HealthUnited Kingdom
Year: 1986 PMID: 3089514 PMCID: PMC1341039 DOI: 10.1136/bmj.293.6543.346
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623