title: How (why) does oxygen work in advanced COPD?
authors.forename: Thomas L
authors.initials: TL
authors.lastname: Petty
mesh_terms: D002940:Circadian Rhythm / Q000502:physiology; D006801:Humans; D008134:Long-Term Care; D010100:Oxygen / Q000097:blood; D010102:Oxygen Inhalation Therapy; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology / Q000628:therapy*; D016896:Treatment Outcome
chemical_list: D010100:Oxygen