E Cigarettes Show Surprising Efficacy in Smoking Cessation Respiratory Therapy Electronic cigarettes: Help or hazard? Harvard Health 2FIRSTS France's HAS to Address Role of E Cigarettes in Updated Smoking Cessation Guidelines, Tells 2Firsts 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 Characteristics, Safety Issues, & Regulation Britannica FDA Extends Authority to e Cigarettes: Implications for Smoking Cessation? MD Spiro