B. Four

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."

Senator Ed Markey stated that: "e-cigarettes are a gateway to tobacco use by children and teens...".

There is a provision for of informed consent; however, the conditions for such a waiver were not met because: (1) the level of risk was not minimal; (2) the waiver did affect the rights and welfare of the subjects; (3) the research could still practicably have been carried out with informed consent; (4) subjects were not provided with information after the study to explain what occurred.

The most telling point is Dr. Glantz's opposition to legislation that classifies electronic cigarettes as being separate from tobacco products. The electronic cigarette associations have been lobbying local and state governments not to classify e-cigarettes as tobacco products. This makes perfect sense because they are not tobacco products. They contain no tobacco. They are orders of magnitude safer than cigarettes and should not be treated in the same category for regulatory purposes.

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