title: [Chronic bronchitis, a social disease. Some considerations on its incidence in Lunigiana].
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001987:Bronchiectasis / Q000453:epidemiology / Q000209:etiology; D001991:Bronchitis / Q000150:complications / Q000453:epidemiology*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D007558:Italy; D008297:Male; D008875:Middle Aged; D011660:Pulmonary Heart Disease / Q000209:etiology; D012737:Sex Factors; D012907:Smoking / Q000150:complications
vernacular_title: La bronchite cronica, malattia sociale. Alcune considerazioni sulla sua incidenza in Lunigiana