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Le DE, Pelberg RA, Leong-Poi H, Bin JP, Linden J, Kaul S.Le DE, et al.J Am Soc Echocardiogr. 2003 Jul;16(7):764-9. doi: 10.1016/S0894-7317(03)00214-1.J Am Soc Echocardiogr. 2003.PMID: 12835664