[Value of ultrasonic echography in obstetrics].
D001724:Birth Weight; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007746:Labor Presentation; D008722:Methods; D009774:Obstetrics; D011247:Pregnancy; D014465:Ultrasonics / Q000295:instrumentation; D014463:Ultrasonography
Intérêt de l'échographie ultrasonique en obstétrique.