To be valid, the study needs to examine e-cigarette smokers who have not tried these products before and are trying them for the first time in an attempt to quit smoking. Otherwise, the study cannot truly claim to draw conclusions about how helpful e-cigarettes are for smoking cessation among cancer patients.

This is actually an important point because in published studies of the efficacy of electronic cigarettes, they reportedly helped more than half of smokers to either quit completely or cut down the amount they smoked by 50% or more. Thus, electronic cigarettes - even dual use - results in a substantial decline in cigarette consumption for the majority of users.

As tobacco control advocates commemorate the 50th anniversary of the release of the 1964 Surgeon General's report on smoking by Dr. Luther Terry, we are praising Dr. Terry for his groundbreaking and pivotal work that many view as having started the tobacco control movement. Dr. Terry served as Surgeon General of the United States Public Health Service from 1961 to 1965.

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