Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from TAD.Eriksen 1985
gestational age:time:pt:^fetus:qn:us+estimated from tad.eriksen 1985
Gestational age estimated from Transverse abdominal diameter on US by Eriksen 1985 method
gestational age estimated from transverse abdominal diameter on us by eriksen 1985 method