[Ultrasound diagnosis in obstetrics].
D000033:Abortion, Threatened / Q000175:diagnosis; D005260:Female; D006801:Humans; D006828:Hydatidiform Mole / Q000175:diagnosis; D010923:Placenta Previa / Q000175:diagnosis; D011247:Pregnancy; D013997:Time Factors; D014427:Twins; D014463:Ultrasonography
Ultralyd-diagnostikk i obstetrikk.