The U.S. E-Cigarette Market Is the Biggest in the World: Chart - Bloomberg
The Look of Vapes Has Changed. Here's Why the Shift Has Experts Worried. - The New York Times
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Increase in vaping by B-R students has school district warning parents
E-cigarette flavorings have dangerous chemicals
More teenagers trying e-cigarettes than tobacco, US study suggests | AAAS | The Guardian
Vaping: How popular are e-cigarettes?
E-cigarette users '15% more likely to have a stroke at middle-age than smokers' | The US Sun