[Ultrasonic measurement of femur length in estimating the fetal gestational age].
Zhao
J R
JR
D000886:Anthropometry; D005314:Embryonic and Fetal Development; D005260:Female; D005269:Femur / Q000033:anatomy & histology*; D005333:Fetus / Q000033:anatomy & histology*; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D014463:Ultrasonography