Do e-Cigarettes Harm Your Chances of Quitting?

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Research last month claimed to show that e-cigarettes harm your chances of quitting smoking. The paper got coverage world-wide but it also came in for unusually fierce criticism from academics who spend their lives trying to help people quit. It has been described as 'grossly misleading' and 'not scientific'. We look at what is wrong with the paper and ask if it should have been published in the first place. (Photo: Man smoking e-cigarette. Credit: Dan Kitwood/Getty Images)