echocardiography: diastolic flow velocity of prosthetic left atrioventricular valve
echocardiography: diastolic flow velocity of prosthetic left atrioventricular valve
echocardiography: diastolic flow velocity of prosthetic left atrioventricular valve (procedure)
echocardiography: diastolic flow velocity of prosthetic left atrioventricular valve (procedure)