Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from HC.Hansmann 1985
gestational age:time:pt:^fetus:qn:us+estimated from hc.hansmann 1985
Gestational age estimated from Head circumference on US by Hansmann 1985 method
gestational age estimated from head circumference on us by hansmann 1985 method