title: Inspiration-phased oxygen delivery.
mesh_terms: D000328:Adult; D000368:Aged; D001991:Bronchitis / Q000097:blood / Q000628:therapy; D002245:Carbon Dioxide / Q000097:blood; D003365:Costs and Cost Analysis; D006801:Humans; D008875:Middle Aged; D010100:Oxygen / Q000097:blood; D010102:Oxygen Inhalation Therapy / Q000295:instrumentation* / Q000379:methods; D011656:Pulmonary Emphysema / Q000097:blood / Q000628:therapy
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen