Question and answer
The major risk factor for chronic bronchitis is A. dust in the air. B. previous allergies. C. family history. D. cigarette smoking.
The major risk factor for chronic bronchitis is cigarette smoking.
rdsa77|Points 8463|
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Asked 10/10/2010 9:08:31 PM
Updated 18 days ago|1/1/2019 5:53:35 AM
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This answer has been confirmed as correct and helpful.
Edited by Masamune [1/1/2019 5:53:34 AM], Confirmed by Masamune [1/1/2019 5:53:35 AM], Masamune [1/1/2019 5:53:35 AM]
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