E cigarettes should be offered to smokers, say doctors BBC News Cigarettes, Smokeless Tobacco, and Vapes: Key Facts for Quitting and Staying Healthy Maryland Physicians Care E Cigarettes Are Effective at Helping Smokers Quit, a Study Says The New York Times Largest US study of e cigarettes shows their value as smoking cessation aid What to Know About Electronic Cigarettes (E Cigarettes) E Cigarettes OK to Quit Smoking Moffitt