Discordant Echocardiographic Grading in Low Gradient Aortic Stenosis (DEGAS Study) From the Italian Society of Echocardiography and Cardiovascular Imaging Research Network: Rationale and Study Design.
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J Cardiovasc Echogr. 2020 Apr-Jun;30(2):52-61. doi: 10.4103/jcecho.jcecho_68_20. Epub 2020 Aug 17.
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PMID: 33282641
Free PMC article.