For this reason, I am discouraged about the possibility that people like Dr. Glantz and Dr. Chapman will change their minds about the potential utility of e-cigarettes if further evidence accumulates to demonstrate the benefits of these products. The science is simply not going to matter to them. Hopefully, the science will matter to the FDA.

In a separate published in the same issue of Circulation, these same authors write: "As of March 2014, 5 population-based studies had examined the relationship between e-cigarette use and quitting smoking. Because these studies did not measure whether people were using e-cigarettes as a smoking cessation aid or other reasons for use such as to circumvent smoke-free laws, they did not directly test the efficacy of e-cigarettes as smoking cessation aids." [emphasis is mine]

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