Problems in prescribing and supplying oxygen for Medicare patients.
D003365:Costs and Cost Analysis; D006699:Home Care Services; D006701:Home Nursing; D006801:Humans; D007349:Insurance, Health, Reimbursement; D008173:Lung Diseases, Obstructive / Q000628:therapy*; D006278:Medicare; D010102:Oxygen Inhalation Therapy / Q000191:economics*; D055656:Prescriptions; D014481:United States