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Pentland B, Roy CW, Miller JD.Pentland B, et al.Br Med J (Clin Res Ed). 1987 Mar 7;294(6572):643. doi: 10.1136/bmj.294.6572.643.Br Med J (Clin Res Ed). 1987.PMID: 3103843Free PMC article.No abstract available.