The assessment of fetal development by ultrasound: experience from 15,000 obstetric patients.
D005260:Female; D005323:Fetal Monitoring / Q000379:methods*; D005333:Fetus / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D011247:Pregnancy; D014463:Ultrasonography; D015022:Yugoslavia