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