Trends in obstetric anesthesia in one large urban area.
D000698:Analgesia; D000758:Anesthesia; D000760:Anesthesia and Analgesia; D000773:Anesthesia, Obstetrical; D002585:Cesarean Section; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D011247:Pregnancy
CESAREAN SECTION/anesthesia and analgesia; LABOR/anesthesia and analgesia