title: [Problems in clinical classification of chronic obstructive pulmonary diseases--analysis of the results obtained from 38 cases].
mesh_terms: D000328:Adult; D000368:Aged; D001158:Arteries; D001995:Bronchography; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008173:Lung Diseases, Obstructive / Q000145:classification* / Q000000981:diagnostic imaging / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood; D011653:Pulmonary Diffusing Capacity
chemical_list: D010100:Oxygen