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Characteristics of secondhand cannabis smoke from common smoking methods: Calibration factor, emission rate, and particle removal rate ScienceDirect Vaping Produces a Chemical that Destroys Human Tissue, Research Shows NICOTINE & CANNABIS POLICY CENTER Teenage Tobacco Use Drops But Marijuana Use Increases Are There Risks From Secondhand Marijuana Smoke? Early Science Says Yes KCUR Kansas City news and NPR Marijuana vs Alcohol What the CDC says about usage Smoking Marijuana Vs. Tobacco: What Science Says About Lighting Up
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