Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from HC.Hoffbauer 1979
gestational age:time:pt:^fetus:qn:us+estimated from hc.hoffbauer 1979
Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from HC.Hoffbauer 1979
gestational age:time:pt:^fetus:qn:us+estimated from hc.hoffbauer 1979