The authors of this study make one of the most cardinal errors in all of epidemiology. They ignore the principle that "correlation does not equal causation."

Not everyone is informed as we are about what exactly an electronic cigarette is. Cigarettes have been demonized for decades; the very fact that it’s called an electronic cigarette and produces a opaque vapor during exhale has many misinformed individuals terrified.

In an published last week in the Los Angeles Times, CDC director Dr. Thomas Frieden was quoted as stating:

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