Diameter.BPD.area-corrected:Len:Pt:Head^Fetus:Qn:US.derived
diameter.bpd.area-corrected:len:pt:head^fetus:qn:us.derived
Diameter.BPD.area-corrected:Length:To identify measures at a point in time:Head^Fetus:Quantitative:Ultrasound.derived
diameter.bpd.area-corrected:length:to identify measures at a point in time:head^fetus:quantitative:ultrasound.derived