title: Letter: Simple oxygen-failure safety device.
mesh_terms: D000769:Anesthesia, Inhalation / Q000295:instrumentation; D006801:Humans; D010100:Oxygen / Q000008:administration & dosage; D011482:Protective Devices; D012122:Ventilators, Mechanical / Q000295:instrumentation*
chemical_list: D010100:Oxygen