title: Respiratory function and portable oxygen therapy in chronic non-specific lung disease in relation to prognosis.
mesh_terms: D006801:Humans; D008171:Lung Diseases; D010100:Oxygen / Q000628:therapy*; D010102:Oxygen Inhalation Therapy; D011379:Prognosis; D012119:Respiration
chemical_list: D010100:Oxygen
keywords: LUNG DISEASES; OXYGEN/therapy