Normal Echocardiographic Reference Values of the Right Ventricular to Left Ventricular Endsystolic Diameter Ratio and the Left Ventricular Endsystolic Eccentricity Index in Healthy Children and in Children With Pulmonary Hypertension

健康儿童和肺动脉高压患儿右心室与左心室收缩末期直径比值和左心室收缩末期偏心指数的正常超声心动图参考值