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Hamburger J, Potts AJ.Hamburger J, et al.Br Med J (Clin Res Ed). 1983 Oct 29;287(6401):1258. doi: 10.1136/bmj.287.6401.1258.Br Med J (Clin Res Ed). 1983.PMID: 6416356Free PMC article.No abstract available.