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 E cigarette use to reduce cigarette smoking may not increase nicotine dependence Penn State Health News E cigarettes more effective than nicotine replacement therapies, finds major UK clinical trial Queen Mary University of London Viewpoints: Is the jury still out on e cigarettes? NZ Drug Foundation