Home oxygen therapy.
D002986:Clinical Trials as Topic; D006699:Home Care Services; D006801:Humans; D000860:Hypoxia / Q000628:therapy; D008173:Lung Diseases, Obstructive / Q000401:mortality / Q000628:therapy*; D009656:North America; D010102:Oxygen Inhalation Therapy / Q000295:instrumentation / Q000379:methods; D006113:United Kingdom