Which of the following historic, first-time ever, unprecedented actions did the FDA take in order to ensure its protection of the nation's public health from the hazards of cigarette smoking?

For the Mayo Clinic:

Dr. Vickerman herself that her results do not in any way indicate that electronic cigarettes are less effective than NRT, stating: "It may be that callers who had struggled to quit in the past were more likely to try e-cigarettes as a new method to help them quit. These callers may have had a more difficult time quitting, regardless of their e-cigarette use."

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