Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from HC.ASUM 2000
gestational age:time:pt:^fetus:qn:us+estimated from hc.asum 2000
Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from HC.ASUM 2000
gestational age:time:pt:^fetus:qn:us+estimated from hc.asum 2000