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Smoking cannabis may be more harmful to lungs than tobacco: study Is Marijuana Smoke Worse Than Tobacco Smoke? Emphysema More Common in Marijuana Smokers than Cigarette Smokers [IMAGE] EurekAlert! Science News Releases Cigarettes vs. Weed SiOWfa15: Science in Our World: Certainty and Controversy Marijuana vs. Tobacco Differences Clearbrook Centers Does Marijuana Cause Lung Cancer?
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