A brief history of e cigarettes More teen vaping could reverse progress in tobacco reduction USC Today E Cigarettes Are Effective at Helping Smokers Quit, a Study Says The New York Times Controversial Use of E cigarettes and Vaping A "Heated" Debate Summa Health Largest US study of e cigarettes shows their value as smoking cessation aid Landmark E Cigarette Report Explodes Myth that Vaping Is as Toxic as Smoking