Gestational age:Time:Pt:^Fetus:Qn:US.estimated from fibula length.Merz 1987
gestational age:time:pt:^fetus:qn:us.estimated from fibula length.merz 1987
Gestational age estimated from Fibula length by method of Merz 1987 (US)
gestational age estimated from fibula length by method of merz 1987 (us)