| Literature DB >> 3113541 |
R Jackson, R Scragg, R Marshall, H White, K O'Brien, C Small.
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Year: 1987 PMID: 3113541 PMCID: PMC1246732 DOI: 10.1136/bmj.294.6587.1588
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623