Occupational factors in chronic bronchitis.
D000328:Adult; D000367:Age Factors; D001991:Bronchitis / Q000453:epidemiology* / Q000209:etiology; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008297:Male; D008906:Mining; D009660:Northern Ireland; D009784:Occupational Diseases / Q000453:epidemiology*; D012737:Sex Factors; D013783:Textile Industry; D006113:United Kingdom