echocardiography: systolic flow velocity of prosthetic truncal atrioventricular valve
echocardiography: systolic flow velocity of prosthetic truncal atrioventricular valve
echocardiography: systolic flow velocity of prosthetic truncal atrioventricular valve (procedure)
echocardiography: systolic flow velocity of prosthetic truncal atrioventricular valve (procedure)