Experiences with the technique of ultrasonic Doppler method in obstetrics.
D000033:Abortion, Threatened / Q000175:diagnosis; D000328:Adult; D001314:Auscultation; D004562:Electrocardiography; D005260:Female; D005313:Fetal Death / Q000175:diagnosis; D005318:Fetal Heart / Q000502:physiology*; D005865:Gestational Age; D006801:Humans; D006828:Hydatidiform Mole / Q000175:diagnosis; D007743:Labor, Obstetric; D008297:Male; D008722:Methods; D010701:Phonocardiography; D011247:Pregnancy; D014463:Ultrasonography