title: Effect of long-term, continuous oxygen therapy in patients with severe chronic hypercapnia.
mesh_terms: D002245:Carbon Dioxide / Q000097:blood; D006801:Humans; D006935:Hypercapnia / Q000097:blood / Q000188:drug therapy; D008173:Lung Diseases, Obstructive / Q000097:blood; D010100:Oxygen / Q000097:blood; D010102:Oxygen Inhalation Therapy; D010313:Partial Pressure
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen