echocardiography: diastolic 1/3 filling fraction period of tricuspid valve at end of expiration
echocardiography: diastolic 1/3 filling fraction period of tricuspid valve at end of expiration
echocardiogram tricuspid valve diastolic 1/3 filling fraction period end expiration
echocardiogram tricuspid valve diastolic 1/3 filling fraction period end expiration