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Himmelberger DU, Brown BW Jr, cohen EN.Himmelberger DU, et al. Among authors: cohen en.Am J Epidemiol. 1978 Dec;108(6):470-9. doi: 10.1093/oxfordjournals.aje.a112645.Am J Epidemiol. 1978.PMID: 736026
Cohen EN, Brown BW Jr.Cohen EN, et al.Br Med J. 1980 Dec 6;281(6254):1568-9. doi: 10.1136/bmj.281.6254.1568-d.Br Med J. 1980.PMID: 7437883Free PMC article.No abstract available.
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