A history of nitrous oxide and oxygen anaesthesia. XII. Developments in America and nitrous oxide anaesthesia between world wars.
D000769:Anesthesia, Inhalation / Q000266:history*; D003490:Cyanosis; D049673:History, 20th Century; D006801:Humans; D009609:Nitrous Oxide / Q000266:history*; D010100:Oxygen / Q000266:history; D014481:United States
D009609:Nitrous Oxide; D010100:Oxygen