Further advances in ultrasonic diagnosis.
D002508:Cephalometry; D005314:Embryonic and Fetal Development; D005260:Female; D005333:Fetus; D005831:Genital Diseases, Female / Q000175:diagnosis; D006801:Humans; D010920:Placenta; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014427:Twins; D014465:Ultrasonics