Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from CRL.Daya 1993
gestational age:time:pt:^fetus:qn:us+estimated from crl.daya 1993
Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from CRL.Daya 1993
gestational age:time:pt:^fetus:qn:us+estimated from crl.daya 1993