Diameter.anterior-posterior:Len:Pt:Head.fourth cerebral ventricle^Fetus:Qn:US.measured
diameter.anterior-posterior:len:pt:head.fourth cerebral ventricle^fetus:qn:us.measured
Diameter.anterior-posterior:Length:To identify measures at a point in time:Head.fourth cerebral ventricle^Fetus:Quantitative:Ultrasound.measured
diameter.anterior-posterior:length:to identify measures at a point in time:head.fourth cerebral ventricle^fetus:quantitative:ultrasound.measured