FURTHER HAZARDS OF GAS AND AIR IN OBSTETRICS.
D000758:Anesthesia; D000769:Anesthesia, Inhalation; D000773:Anesthesia, Obstetrical; D000776:Anesthesiology; D004864:Equipment and Supplies; D005260:Female; D006801:Humans; D008880:Midwifery; D009609:Nitrous Oxide; D009774:Obstetrics; D011247:Pregnancy
D009609:Nitrous Oxide
ANESTHESIA, INHALATION; ANESTHESIA, OBSTETRICAL; EQUIPMENT AND SUPPLIES; MIDWIFERY; NITROUS OXIDE