Routine ultrasonic examinations in obstetrics.
D000649:Amniocentesis; D005260:Female; D005313:Fetal Death / Q000175:diagnosis; D005318:Fetal Heart; D006801:Humans; D006828:Hydatidiform Mole / Q000175:diagnosis; D009774:Obstetrics; D010923:Placenta Previa / Q000175:diagnosis*; D011247:Pregnancy; D014463:Ultrasonography