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Richards P, McManus IC, Maitlis SA.Richards P, et al. Among authors: mcmanus ic.Br Med J (Clin Res Ed). 1988 May 28;296(6635):1520-1. doi: 10.1136/bmj.296.6635.1520.Br Med J (Clin Res Ed). 1988.PMID: 3134096Free PMC article.
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