| Literature DB >> 6779993 |
R J Fergusson, D J Wright, R F Willey, G K Crompton, I W Grant.
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Year: 1981 PMID: 6779993 PMCID: PMC1504077 DOI: 10.1136/bmj.282.6260.298
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623