| Literature DB >> 6780062 |
P R Mills, E A Follett, G E Urquhart, G Clements, G Watkinson, R N Macsween.
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Year: 1981 PMID: 6780062 PMCID: PMC1504220 DOI: 10.1136/bmj.282.6262.437-a
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623