E Cigarettes Are Effective at Helping Smokers Quit, a Study Says The New York Times Teens who use flavored e cigarettes more likely to start smoking Harvard Health FDA permits the marketing of an e cigarette for the first time, paving the way for vaping products to be legally sold in the U.S. Roswell Park Comprehensive Cancer Center Buffalo, Johns Hopkins researchers find thousands of unknown chemicals in electronic cigarettes Hub E Cigarette and Vaping Illness 700 Children's