American Heart Association: Vaping Combined With Smoking Is Likely As Harmful as Smoking Cigarettes Alone E cigarettes: a step forward for smokers, or a step into the unknown? Vaping The Guardian As popularity of e cigarettes rises, more smokers are able to quit, study says Los Angeles Times E Cigarettes, Vaping, and Other Electronic Nicotine Products: Harm Reduction Pathways or New Avenues for Addiction? Psychiatric Times