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<http://linkedlifedata.com/resource/pubmed/commentcorrection/19228595-12361683> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Placenta. 2002 Sep-Oct;23(8-9):640-52" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/19228595-12361683> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/12361683> .