Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from OOD.Trout 1994
gestational age:time:pt:^fetus:qn:us+estimated from ood.trout 1994
Gestational age:Time:To identify measures at a point in time:^Fetus:Quantitative:Ultrasound+Estimated from OOD.Trout 1994
gestational age:time:to identify measures at a point in time:^fetus:quantitative:ultrasound+estimated from ood.trout 1994