| Literature DB >> 3133056 |
S Heptinstall1, S R Cockbill, M E Burgess-Wilson, E W Jones.
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Year: 1988 PMID: 3133056 PMCID: PMC2545768 DOI: 10.1136/bmj.296.6632.1298
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623