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 Stop Smoking: 3 Treatments Are Most Effective, New Research Finds Efficacy and Safety of E Cigarette Use for Smoking Cessation: A Systematic Review and Meta Analysis of Randomized Controlled Trials The American Journal of Medicine E cigarettes and nicotine abstinence: a meta analysis of randomised controlled trials European Respiratory Society Interventions for smoking cessation: An overview of Cochrane reviews