Letter: Future of inhalational anaesthesia.
D000769:Anesthesia, Inhalation; D000777:Anesthetics / Q000009:adverse effects; D006801:Humans; D007880:Legislation, Drug; D009609:Nitrous Oxide / Q000009:adverse effects; D014481:United States; D014486:United States Food and Drug Administration
D000777:Anesthetics; D009609:Nitrous Oxide