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Whincup PH, Cook DG, Shaper AG.Whincup PH, et al.Br Med J (Clin Res Ed). 1987 Nov 14;295(6608):1278-9. doi: 10.1136/bmj.295.6608.1278-d.Br Med J (Clin Res Ed). 1987.PMID: 3120974Free PMC article.No abstract available.