Determination of Pulmonary to Systemic Flow Ratio and Prediction of Pulmonary Arterial Pressure in Children by Pulsed Doppler Echocardiography
1986 ◽
Vol 57
(4)
◽
pp. 316-321
◽
1934 ◽
Vol 59
(2)
◽
pp. 173-180
◽