Over recent years extraordinary progress has been made in the management of chronic lung disease, based upon rational use of drug therapy and understanding of the disordered physiology. Nevertheless death rates from chronic bronchitis have increased substantially among men, and the beginnings of the same disturbing rise are apparent among women. It appears unlikely that air pollution is responsible in Australia, the evidence pointing to increased cigarette smoking as the major causative factor.
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David Christie (1971) studied this question.
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