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Chronic Bronchitis and Its Relationship to Industry and Air Pollution.

Geoffry L. Brinkman, M.D.
Ann Intern Med. 1964;60(2_Part_1):335-336. doi:10.7326/0003-4819-60-2-335_2
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The prevalence of chronic bronchitis in the United States is probably much higher than commonly believed. One recent survey showed a prevalence of 20% in men over 40 years old. As well, it is sometimes not appreciated that in chronic bronchitis there is a considerable morbidity and mortality as demonstrated by a recent English study in which the death rate among persons with chronic bronchitis was 4.2 times greater than expected, 62% of these deaths being directly attributable to bronchitis. While cigarette smoking is a well-recognized etiological factor, the effects of different occupations and air pollution are less well-recognized. Studies


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