Schoolchildren who use e cigarettes are more likely to try tobacco New E Cigarette Laws Could Drive Some Users to Smoke More Cigarettes Duke Health Changes in Concentration of Selected Biomarkers of Exposure in Users of Classic Cigarettes, E Cigarettes, and Heated Tobacco ProductsA Narrative Review Over 1 in 10 young adults regularly use e cigarettes, CDC report says CNN E cigarettes: Facts, stats and regulations E Cigarettes Brands Flood the Market, Both Online and in Stores