title: Letter: Nitrous-oxide asphyxia.
mesh_terms: D000758:Anesthesia / Q000009:adverse effects; D000776:Anesthesiology / Q000295:instrumentation*; D001237:Asphyxia / Q000139:chemically induced; D004469:Economics, Hospital; D004739:England; D004865:Equipment and Supplies, Hospital / Q000592:standards*; D009609:Nitrous Oxide / Q000009:adverse effects
chemical_list: D009609:Nitrous Oxide