Gestational age:Time:Pt:^Fetus:Qn:US.estimated from APAD.Lessoway 1998
gestational age:time:pt:^fetus:qn:us.estimated from apad.lessoway 1998
Gestational age:Time:Pt:^Fetus:Qn:US.estimated from APAD.Lessoway 1998
gestational age:time:pt:^fetus:qn:us.estimated from apad.lessoway 1998