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<http://linkedlifedata.com/resource/pubmed/commentcorrection/18346920-879241> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Am J Obstet Gynecol. 1977 Aug 1;128(7):735-9" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/18346920-879241> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/879241> .