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  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1277837/   Get the latest research from NIH: https://www.nih.gov/coronavirus. Journal List Harm Reduct J v.2; 2005 PMC1277837 Harm Reduct J. 2005; 2: 21. Published online 2005 Oct 18. doi: 10.1186/1477-7517-2-21 PMCID: PMC1277837 PMID: 16232311 Cannabis and tobacco smoke are not equally carcinogenic Robert Melamede1,2 Author information Article notes Copyright and License information Disclaimer Copyright ©…