Vaping makes it harder, not easier, to quit smoking, study finds The Brighter Side of News E cigarette Characteristics, Safety Issues, & Regulation Britannica E Cigarettes Show Surprising Efficacy in Smoking Cessation Respiratory Therapy Electronic cigarettes: Help or hazard? Harvard Health Yet Another Study Indicated The Effectiveness of E Cig Use For Smoking Cessation Vaping Post Latest Cochrane Review finds high certainty evidence that nicotine e cigarettes are more effective than traditional nicotine replacement therapy (NRT) in helping people quit smoking Cochrane