Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from HL.Osaka 1989
gestational age:time:pt:^fetus:qn:us+estimated from hl.osaka 1989
Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from HL.Osaka 1989
gestational age:time:pt:^fetus:qn:us+estimated from hl.osaka 1989