title: Socio-medical aspects of chronic bronchitis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001991:Bronchitis / Q000453:epidemiology; D002648:Child; D002908:Chronic Disease; D003718:Denmark; D005260:Female; D006361:Heating; D006801:Humans; D006813:Humidity; D008297:Male; D008875:Middle Aged; D012111:Residence Characteristics; D012621:Seasons; D012737:Sex Factors; D012907:Smoking; D012959:Socioeconomic Factors