| Literature DB >> 1111803 |
J F Nunn, A J Coleman, H T Davenport, G H Hulands, J G Jones, R S Cormack.
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Year: 1975 PMID: 1111803 PMCID: PMC1672497 DOI: 10.1136/bmj.1.5953.332
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447