Clinical use of ultrasound in obstetrics and gynecology.
D005260:Female; D005313:Fetal Death / Q000175:diagnosis*; D005333:Fetus; D005831:Genital Diseases, Female / Q000175:diagnosis*; D006801:Humans; D006828:Hydatidiform Mole / Q000175:diagnosis; D010923:Placenta Previa / Q000175:diagnosis; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*; D011272:Pregnancy, Multiple; D014465:Ultrasonics