Perimeter:Len:Pt:Head^Fetus:Qn:US.estimated from ASUM 2000
perimeter:len:pt:head^fetus:qn:us.estimated from asum 2000
Fetal Head Circumference estimated from gestational age by method of Australian Society of Ultrasound Medicine 2000 (US)
fetal head circumference estimated from gestational age by method of australian society of ultrasound medicine 2000 (us)