"It borders on bizarre that critics like [West Virginia Senator Jay] Rockefeller continue to question the existence of those former smokers, even while arguing that e-cigarettes should be restricted or banned based on the that vaping will lead to smoking among teenagers who otherwise never would have tried tobacco."

Nevertheless, this does not stop the authors from drawing a conclusion. They conclude, despite their acknowledged inability to draw such a conclusion, that: "e-cigarette use is aggravating rather than ameliorating the tobacco epidemic among youths."

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