Length from T6 to L3:Len:Pt:Spine^Fetus:Qn:US.measured
length from t6 to l3:len:pt:spine^fetus:qn:us.measured
Length from T6 to L3:Length:To identify measures at a point in time:Spine^Fetus:Quantitative:Ultrasound.measured
length from t6 to l3:length:to identify measures at a point in time:spine^fetus:quantitative:ultrasound.measured