Ultrasound in obstetrics and gynaecology.
D005260:Female; D005831:Genital Diseases, Female / Q000175:diagnosis*; D006176:Gynecology / Q000295:instrumentation; D006801:Humans; D009774:Obstetrics / Q000295:instrumentation; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*; D014463:Ultrasonography