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<http://linkedlifedata.com/resource/pubmed/commentcorrection/18615195-10419809> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Placenta. 1999 Jul-Aug;20(5-6):441-50" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/18615195-10419809> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/10419809> .
<http://linkedlifedata.com/resource/pubmed/id/18615195> <http://linkedlifedata.com/resource/pubmed/commentsCorrections> <http://linkedlifedata.com/resource/pubmed/commentcorrection/18615195-10419809> .