| Literature DB >> 3120871 |
B Cuthbertson, W E McBay, A G Welch, R J Perry, P R Foster.
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Year: 1987 PMID: 3120871 PMCID: PMC1248092 DOI: 10.1136/bmj.295.6605.1062
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623