Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from AC.Hansmann 1985
gestational age:time:pt:^fetus:qn:us+estimated from ac.hansmann 1985
Gestational age estimated from Abdominal circumference on US by Hansmann 1985 method
gestational age estimated from abdominal circumference on us by hansmann 1985 method