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<http://linkedlifedata.com/resource/pubmed/commentcorrection/2521489-6272572> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Am J Epidemiol. 1981 Nov;114(5):632-48" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/2521489-6272572> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/6272572> .