The specific financial interests of the co-authors, according to the anti-smoking groups are:

Here is Glantz's accusation: "the e-cigarette companies (which are, increasingly owned by cigarette companies) are mobilizing the same network of right-wing think tanks that the cigarette companies have used for years to push their policy agenda, often linked with the tobacco companies' development of the Tea Party and related groups. John Mashey, a member of the Center for Tobacco Control Research and Education's Advisory Committee, sent me a few good examples. ... The more things change the more they stay the same."

A third major advantage of a clinical trial is that conditions are controlled as carefully as possible, minimizing potential biases. Both sampling and measurement bias are greatly reduced, if not eliminated. In contrast, survey studies are generally subject to significant sampling and measurement bias.

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