Anaesthesia in the 1920s.
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D000758:Anesthesia / Q000266:history*; D000776:Anesthesiology / Q000266:history; D018685:Anesthetics, Inhalation / Q000266:history; D013502:General Surgery / Q000266:history; D049673:History, 20th Century; D006801:Humans; D019990:Perioperative Care / Q000266:history; D006113:United Kingdom
D018685:Anesthetics, Inhalation