obstetric ultrasound: fetal femur length estimated from gestational age by Merz 1988 method
obstetric ultrasound: fetal femur length estimated from gestational age by merz 1988 method
obstetric ultrasound: fetal femur length estimated from gestational age by Merz 1988 method (procedure)
obstetric ultrasound: fetal femur length estimated from gestational age by merz 1988 method (procedure)