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Javaheri S, Nardell EA.Javaheri S, et al.Br Med J (Clin Res Ed). 1981 Oct 17;283(6298):1016-7. doi: 10.1136/bmj.283.6298.1016.Br Med J (Clin Res Ed). 1981.PMID: 6794744Free PMC article.