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<http://linkedlifedata.com/resource/pubmed/commentcorrection/19116037-10329356> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Placenta. 1999 May;20(4):339-45" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/19116037-10329356> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/10329356> .