R Smith. Show Affiliations »
Abstract
Mesh: See more » LanguagePublishing
Year: 1986 PMID: 3101935 PMCID: PMC1351866 DOI: 10.1136/bmj.293.6562.1591-a
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623