Just published the first randomized controlled trial of varenicline for vaping cessation CoEHAR Choisir une cigarette lectronique sans nicotine E Cigarettes: They May Help People to Quit Smoking, But What About Harm to Public Health? E cigarettes more effective than other smoking cessation aids, new review finds Nuffield Department of Primary Care Health Sciences University of Oxford E cigarettes more effective than nicotine replacement therapies, finds major UK clinical trial Queen Mary University of London