Gestational age:Time:Pt:^Fetus:Qn:US+Estimated from BPD.Shinozuka 1996
gestational age:time:pt:^fetus:qn:us+estimated from bpd.shinozuka 1996
Gestational age estimated from Biparietal diameter on US by Shinozuka 1996 method
gestational age estimated from biparietal diameter on us by shinozuka 1996 method