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Showing articles 0 to 1 of 1 Filter Applied: echocardiogram,transthoracic,false negative (Click to remove) Transthoracic Echocardiography Using Second Harmonic Imaging with Valsalva Manoeuvre for the Detection of Right to Left Shunts Eur J Echocardiogr 5:176-181, Clarke,N.R.,et al, 2004 Showing articles 0 to 1 of 1