| Literature DB >> 2938663 |
J A Langtry, J I Harper, R C Staughton, P Barrington.
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Year: 1986 PMID: 2938663 PMCID: PMC1340042 DOI: 10.1136/bmj.292.6528.1107-a
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623