title: [Respiratory symptoms, pulmonary function and the smoking habit in urban and rural areas of Chile].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001991:Bronchitis / Q000453:epidemiology*; D002677:Chile; D003371:Cough / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012129:Respiratory Function Tests; D012907:Smoking; D013183:Sputum / Q000378:metabolism
vernacular_title: Síntomas respiratorios, función pulmonar y hábito tabáquico en un area urbana y rural de Chile.