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Hill DJ, Hosking CS, Shelton MJ, Turner MW.Hill DJ, et al. Among authors: shelton mj.Br Med J (Clin Res Ed). 1982 Jan 30;284(6312):306-9. doi: 10.1136/bmj.284.6312.306.Br Med J (Clin Res Ed). 1982.PMID: 6800440Free PMC article.Clinical Trial.