Longterm effects of treatment in patients with chronic airway obstruction.
D000402:Airway Obstruction / Q000628:therapy; D002908:Chronic Disease; D003120:Colorado; D003191:Comprehensive Health Care; D005500:Follow-Up Studies; D006801:Humans; D007087:Illinois; D012129:Respiratory Function Tests; D012140:Respiratory Tract Diseases / Q000628:therapy*