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Elwood JM, Gallagher RP, Hill GB, Spinelli JJ, Pearson JC, Threlfall W.Elwood JM, et al. Among authors: spinelli jj.Br Med J (Clin Res Ed). 1984 Jan 14;288(6411):99-102. doi: 10.1136/bmj.288.6411.99.Br Med J (Clin Res Ed). 1984.PMID: 6419839Free PMC article.