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<http://linkedlifedata.com/resource/pubmed/commentcorrection/18821324-17557378> <http://linkedlifedata.com/resource/pubmed/referenceSource> "Ultrasound Obstet Gynecol. 2007 Aug;30(2):173-9" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/18821324-17557378> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/17557378> .