Respiratory Disease in Practice

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Causes of chronic (obstructive) bronchitis in lifelong non-smokers
RDIP, Volume 17, Number 4.

Several studies carried out over the last 50 years have identified cigarette smoking as the most important factor predisposing to chronic bronchitis in Western Europe and North America.1,2 However, the early descriptions of chronic bronchitis and emphysema from Badham3 and Laennec4 were made before cigarette smoking was common. Some of the studies documenting the importance of smoking have also shown that chronic cough and expectoration occurs in a significant percentage of lifelong non-smokers.5

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