Length.crown rump:Len:Pt:^Fetus:Qn:US.estimated from Rempen 1991
length.crown rump:len:pt:^fetus:qn:us.estimated from rempen 1991
Fetal Crown Rump length estimated from gestational age by method of Rempen 1991 (US)
fetal crown rump length estimated from gestational age by method of rempen 1991 (us)