Femur length/Head circumference:LenRto:Pt:^Fetus:Qn:US.derived
femur length/head circumference:lenrto:pt:^fetus:qn:us.derived
Femur length/Head circumference:LenRto:Pt:^Fetus:Qn:US.derived
femur length/head circumference:lenrto:pt:^fetus:qn:us.derived