cannabis or cigarettes Characteristics of secondhand smoke from common smoking methods: Calibration factor, emission rate, and particle removal rate Smoking marijuana may be more
Smoking marijuana may be more harmful to lungs than smoking cigarettes, study finds ABC News Cannabis users 'fail to grasp health risks of smoking,' study says Cannabis The Guardian Tobacco and Cannabis Use Data Washington State Department of Health Mythbusters: Cannabis 20 times more carcinogenic than tobacco? NZ Drug Foundation
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