Long axis.mean:Len:Pt:Ulna.diaphysis^Fetus:Qn:Estimated from gestational age.Merz 1987
long axis.mean:len:pt:ulna.diaphysis^fetus:qn:estimated from gestational age.merz 1987
Fet Ulna Length Est from GA.Merz87
fet ulna length est from ga.merz87