Historical aspects and future directions.
Royal Berkshire Hospital, University of London, England.
A I
AI
Brain
D000776:Anesthesiology / Q000266:history; D004867:Equipment Design; D049673:History, 20th Century; D006801:Humans; D017214:Laryngeal Masks / Q000266:history* / Q000639:trends; D006113:United Kingdom; D014481:United States