EFFECT OF COOLING ON PRE-MIXED GAS MIXTURES FOR OBSTETRIC ANALGESIA.
D016362:Analgesia, Obstetrical; D000758:Anesthesia; D000773:Anesthesia, Obstetrical; D000776:Anesthesiology; D003080:Cold Temperature; D005260:Female; D006801:Humans; D009609:Nitrous Oxide; D009774:Obstetrics; D010100:Oxygen; D011247:Pregnancy
D009609:Nitrous Oxide; D010100:Oxygen
ANESTHESIA, OBSTETRICAL; COLD; NITROUS OXIDE; OXYGEN