| Literature DB >> 3101870 |
E F Monteiro, J A Bradbury, M O'Donnell, I G Rennie, G R Kinghorn.
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Year: 1987 PMID: 3101870 PMCID: PMC1245356 DOI: 10.1136/bmj.294.6568.349
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623