| Literature DB >> 6786542 |
I A O'Brien, J Fitzgerald-Fraser, I G Lewin, R J Corrall.
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Year: 1981 PMID: 6786542 PMCID: PMC1505437 DOI: 10.1136/bmj.282.6275.1515
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623