Ultrasound biparietal diameter in spina bifida.
D005260:Female; D005317:Fetal Growth Retardation / Q000175:diagnosis; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D011247:Pregnancy; D011296:Prenatal Diagnosis; D012886:Skull / Q000033:anatomy & histology*; D016136:Spina Bifida Occulta / Q000175:diagnosis*; D014463:Ultrasonography