Nathaniel Kuhnover 3 years ago
What Causes Chronic Bronchitis?
Top rated comment
over 3 years ago
Tobacco smoke is the main cause of chronic bronchitis
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over 3 years ago
Chronic bronchitis mainly occurs in people with occupational respiratory diseases e.g. silicosis, coal worker's pneumoconiosis, asbestosis, work-related asthma and byssinosis, and smokers.
