Notes on respiratory performance during labour.
D000769:Anesthesia, Inhalation; D000773:Anesthesia, Obstetrical; D036861:Delivery, Obstetric; D005260:Female; D006801:Humans; D007743:Labor, Obstetric / Q000502:physiology*; D009609:Nitrous Oxide; D011247:Pregnancy; D012119:Respiration; D012129:Respiratory Function Tests; D013223:Statistics as Topic
D009609:Nitrous Oxide