Gestational age:Time:Pt:^Fetus:Qn:US.estimated from ulna length.Jeanty 1984
gestational age:time:pt:^fetus:qn:us.estimated from ulna length.jeanty 1984
Gestational age:Time:Pt:^Fetus:Qn:US.estimated from ulna length.Jeanty 1984
gestational age:time:pt:^fetus:qn:us.estimated from ulna length.jeanty 1984