| Literature DB >> 7437808 |
L F Prescott, R N Illingworth, J A Critchley, I Frazer, M L Stirling.
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Year: 1980 PMID: 7437808 PMCID: PMC1715000 DOI: 10.1136/bmj.281.6252.1392-a
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447