Contrary to the assertion of the authors of this paper, simply being aware that the information one provides to Facebook may be used for research purposes does not constitute informed consent. The fact that users agreed to a Data Use Policy which notes that information may be used for research purposes does not, as the authors state, "[constitute] informed consent for this research."

"while we have heard from some former smokers who say e-cigarettes helped them quit, there is not yet any conclusive scientific evidence that e-cigarettes can work as a cessation aid."

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