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Hillbom M, Muuronen A, Neiman J.Hillbom M, et al.Br Med J (Clin Res Ed). 1987 Sep 5;295(6598):581. doi: 10.1136/bmj.295.6598.581.Br Med J (Clin Res Ed). 1987.PMID: 3117241Free PMC article.No abstract available.