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 The Cochrane Review of behavioural interventions for smoking cessation, explained ASH Scientific Research Tobacco Harm Reduction Construction of electronic cigarettes Wikipedia Conclusions about the effects of electronic cigarettes remain the same Cochrane Cochrane Library: Vaping Helps Quit Smoking