E Cigarettes and Cardiopulmonary Health: Review for Clinicians Circulation 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 How to quit vaping according to experts Biomarkers of potential harm in people switching from smoking tobacco to exclusive ecigarette use, dual use or abstinence: secondary analysis of Cochrane systematic review of trials of ecigarettes for smoking cessation