echocardiography: diastolic 1/2 filling fraction period of tricuspid valve at rest
echocardiography: diastolic 1/2 filling fraction period of tricuspid valve at rest
echocardiography: diastolic 1/2 filling fraction period of tricuspid valve at rest
echocardiography: diastolic 1/2 filling fraction period of tricuspid valve at rest