Gestational age:Time:Pt:^Fetus:Qn:US.estimated from FTA.Osaka 1989
gestational age:time:pt:^fetus:qn:us.estimated from fta.osaka 1989
Gestational age estimated from Fetal trunk area by method of Osaka 1989 (US)
gestational age estimated from fetal trunk area by method of osaka 1989 (us)