Industrial bronchitis.
D000397:Air Pollution; D001991:Bronchitis / Q000453:epidemiology / Q000209:etiology* / Q000401:mortality; D003032:Coal Mining; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000209:etiology*; D009787:Occupational Medicine; D012907:Smoking