title: Analysis of costs of anaesthetic breathing systems.
mesh_terms: D000769:Anesthesia, Inhalation / Q000191:economics*; D003365:Costs and Cost Analysis / Q000379:methods; D006221:Halothane; D006801:Humans; D009609:Nitrous Oxide
chemical_list: D009609:Nitrous Oxide; D006221:Halothane