title: Portable oxygen in chronic obstructive lung disease with hypoxemia and cor pulmonale. A controlled double-blind crossover study.
mesh_terms: D000553:Ambulatory Care; D002986:Clinical Trials as Topic; D006801:Humans; D000860:Hypoxia / Q000097:blood / Q000628:therapy*; D008173:Lung Diseases, Obstructive / Q000097:blood / Q000628:therapy*; D008297:Male; D010102:Oxygen Inhalation Therapy / Q000379:methods*; D010919:Placebos; D011660:Pulmonary Heart Disease / Q000097:blood / Q000628:therapy*; D012129:Respiratory Function Tests
chemical_list: D010919:Placebos