title: Letter: Awareness during endotracheal intubation.
mesh_terms: D003071:Cognition; D006801:Humans; D007442:Intubation, Intratracheal; D009609:Nitrous Oxide / Q000008:administration & dosage; D010100:Oxygen / Q000008:administration & dosage
chemical_list: D009609:Nitrous Oxide; D010100:Oxygen