Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from AC.ASUM 2000
gestational age:time:pt:^fetus:qn:us+estimated from ac.asum 2000
Gestational age estimated from Abdominal circumference on US by Australian Society of Ultrasound Medicine 2000 method
gestational age estimated from abdominal circumference on us by australian society of ultrasound medicine 2000 method