Smoking, air pollution, and bronchitis in Britain.
D000328:Adult; D000367:Age Factors; D000368:Aged; D000397:Air Pollution; D001991:Bronchitis / Q000453:epidemiology*; D002908:Chronic Disease; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011177:Postal Service; D012424:Rural Population; D012494:Sampling Studies; D012737:Sex Factors; D012907:Smoking; D006113:United Kingdom; D014505:Urban Population