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Cigarette smoking is responsible for about _____ of all COPD deaths

A) 50-60
B) 60-70
C) 70-80
D) 80-90
E) 90-100

User El Danielo
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COPD refers to chronic obstructive pulmonary disease which includes diseases like emphysema and chronic bronchitis. According to health guides, cigarette smoking accounts for up to 90 percent of the COPD deaths around the globe. Answer is D. 80-90
User Arthur Alvim
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