Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from GSD.Hansmann 1982
gestational age:time:pt:^fetus:qn:us+estimated from gsd.hansmann 1982
Gestational age estimated from Gestational sac diameter on US by Hansmann 1982 method
gestational age estimated from gestational sac diameter on us by hansmann 1982 method