title: About long-term oxygen therapy.
authors.forename: George E
authors.initials: GE
authors.lastname: Abraham
authors.forename: Terry M
authors.initials: TM
authors.lastname: Dwyer
authors.forename: Rajesh
authors.initials: R
authors.lastname: Bhagat
mesh_terms: D000531:Altitude; D000075202:Contraindications; D006801:Humans; D010102:Oxygen Inhalation Therapy / Q000295:instrumentation / Q000706:statistics & numerical data*; D029424:Pulmonary Disease, Chronic Obstructive / Q000453:epidemiology / Q000628:therapy*; D011788:Quality of Life; D014481:United States / Q000453:epidemiology