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Waggoner AD, Rovner A, de las Fuentes L, Faddis MN, Gleva MJ, Sawhney N, Dávila-Román VG.Waggoner AD, et al.J Am Soc Echocardiogr. 2006 Mar;19(3):307-13. doi: 10.1016/j.echo.2005.10.014.J Am Soc Echocardiogr. 2006.PMID: 16500494Clinical Trial.