| Literature DB >> 6428587 |
P J Ratcliffe, J G Ledingham, P Berman, G K Wilcock, J Keenan.
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Year: 1984 PMID: 6428587 PMCID: PMC1441750 DOI: 10.1136/bmj.288.6434.1877
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623