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<http://linkedlifedata.com/resource/pubmed/commentcorrection/18570640-9882773> <http://linkedlifedata.com/resource/pubmed/referenceSource> "J Am Soc Echocardiogr. 1999 Jan;12(1):7-14" .
<http://linkedlifedata.com/resource/pubmed/commentcorrection/18570640-9882773> <http://linkedlifedata.com/resource/pubmed/referesTo> <http://linkedlifedata.com/resource/pubmed/id/9882773> .