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<http://linkedlifedata.com/resource/pubmed/commentcorrection/16380449-11969345> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Placenta. 2002 Apr;23(4):337-42" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/16380449-11969345> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/11969345> .