These flaws are also noted by Dr. Robert West, director of tobacco research at University College London, who that: "the study was not able to assess whether or not for cancer patients who smoke using an e-cigarette to try and quit is beneficial "because the sample could consist of e-cigarette users who had already failed in a quit attempt, so all those who would have succeeded already would be ruled out"."

These results, while preliminary, provide initial evidence that electronic cigarettes may serve not only as a means of helping smokers to quit, but also of helping them to eventually become free of nicotine addiction.

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