Let's just take three of the Surgeon General's report authors alone (Dr. Neal Benowitz, Dr. Jack Henningfield, and Dr. Jonathan Samet). According to a D.C. District Court filed by R.J. Reynolds and Lorillard:

Even the e-cigarette industry itself supports this legislation. How ironic, then, that the state's physicians, along with other "anti-smoking" groups, are opposing this bill, which was enacted by the legislature and awaits the governor's signature. The "anti-smoking" and "health" groups are urging the governor to veto the bill.

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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