| Literature DB >> 3120855 |
C C Blackwell1, V S James, D M Weir, J D Gemmill, A W Patrick, A Collier, B F Clarke.
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Year: 1987 PMID: 3120855 PMCID: PMC1248069 DOI: 10.1136/bmj.295.6605.1024
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623