| Literature DB >> 6437543 |
D Shah, P B Rylance, M E Rogerson, M Bewick, V Parsons.
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Year: 1984 PMID: 6437543 PMCID: PMC1443603 DOI: 10.1136/bmj.289.6455.1347
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623