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Greenough A, Roberton NR.Greenough A, et al. Among authors: roberton nr.Br Med J (Clin Res Ed). 1985 Feb 23;290(6468):597-600. doi: 10.1136/bmj.290.6468.597.Br Med J (Clin Res Ed). 1985.PMID: 3918687Free PMC article.
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