New E Cigarette Laws Could Drive Some Users to Smoke More Cigarettes Duke Health E cigarette use to reduce cigarette smoking may not increase nicotine dependence Penn State Health News E cigarettes used to break the smoking habit The Denver Post What Is IQOS, and How Is It Different from Vaping or Smoking? 10 Strategies Big Tobacco and E Cigarette Companies Use to Target Kids American Lung Association About E Cigarettes (Vapes) Smoking and Tobacco Use CDC