E cigarettes, heated tobacco and smokeless tobacco products European Lung Foundation New E Cigarette Laws Could Drive Some Users to Smoke More Cigarettes Duke Health About E Cigarettes (Vapes) Smoking and Tobacco Use CDC Are e cigarettes dangerous, or a better alternative to tobacco? E cigarette use to reduce cigarette smoking may not increase nicotine dependence Penn State Health News 10 Strategies Big Tobacco and E Cigarette Companies Use to Target Kids American Lung Association