title: An epidemiologic survey of smoking patterns and chronic obstructive bronchopulmonary disease in Pôrto Alegre, Brazil.
mesh_terms: D000328:Adult; D000368:Aged; D001938:Brazil; D005260:Female; D006801:Humans; D008171:Lung Diseases / Q000453:epidemiology / Q000503:physiopathology; D008173:Lung Diseases, Obstructive / Q000453:epidemiology*; D008297:Male; D008875:Middle Aged; D012907:Smoking; D014505:Urban Population