echocardiography: right ventricle/left ventricle cardiac output ratio of pulmonary valve with stress
echocardiography: right ventricle/left ventricle cardiac output ratio of pulmonary valve with stress
echocardiography: right ventricle/left ventricle cardiac output ratio of pulmonary valve with stress (procedure)
echocardiography: right ventricle/left ventricle cardiac output ratio of pulmonary valve with stress (procedure)