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<http://linkedlifedata.com/resource/pubmed/commentcorrection/17976713-9179920> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Placenta. 1997 May;18(4):269-76" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/17976713-9179920> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/9179920> .
<http://linkedlifedata.com/resource/pubmed/id/17976713> <http://linkedlifedata.com/resource/pubmed/commentsCorrections> <http://linkedlifedata.com/resource/pubmed/commentcorrection/17976713-9179920> .