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<http://linkedlifedata.com/resource/pubmed/commentcorrection/3407688-2248643> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Am J Obstet Gynecol. 1990 Jul;163(1 Pt 1):254-6" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/3407688-2248643> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/2248643> .
<http://linkedlifedata.com/resource/pubmed/id/3407688> <http://linkedlifedata.com/resource/pubmed/commentsCorrections> <http://linkedlifedata.com/resource/pubmed/commentcorrection/3407688-2248643> .