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Gayat E, Ahmad H, Weinert L, Lang RM, Mor-Avi V.Gayat E, et al. Among authors: weinert l.J Am Soc Echocardiogr. 2011 Aug;24(8):878-85. doi: 10.1016/j.echo.2011.04.016. Epub 2011 Jun 8.J Am Soc Echocardiogr. 2011.PMID: 21645991