Chronic bronchitis in forest workers in Finland.
D000328:Adult; D000375:Aging; D001991:Bronchitis / Q000453:epidemiology* / Q000209:etiology; D005387:Finland; D006801:Humans; D008297:Male; D008875:Middle Aged; D009787:Occupational Medicine; D010998:Pleurisy / Q000150:complications; D013902:Radiography, Thoracic; D012129:Respiratory Function Tests; D012907:Smoking / Q000150:complications; D000267:Tissue Adhesions