echocardiography: calculated diastolic peak flow gradient of Blalock-Taussig shunt
echocardiography: calculated diastolic peak flow gradient of blalock-taussig shunt
echocardiography: calculated diastolic peak flow gradient of Blalock-Taussig shunt
echocardiography: calculated diastolic peak flow gradient of blalock-taussig shunt