CLINICAL TRIAL OF AUDIO-ANALGESIA IN CHILDBIRTH.
D000698:Analgesia; D000758:Anesthesia; D000773:Anesthesia, Obstetrical; D000776:Anesthesiology; D005260:Female; D006801:Humans; D036801:Parturition; D011247:Pregnancy
ANESTHESIA, OBSTETRICAL; PREGNANCY