| Literature DB >> 6162506 |
D J Layfield, R J Lemberger, B R Hopkinson, G S Makin.
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Year: 1981 PMID: 6162506 PMCID: PMC1504518 DOI: 10.1136/bmj.282.6265.697
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623