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E-cigarettes 'help smokers to quit'

20 May 2014 Last updated at 13:40 BST

Smokers who use e-cigarettes to quit are more likely to succeed than those who use willpower alone or buy nicotine replacement therapies, a study suggests.

The survey of nearly 6,000 smokers found a fifth had quit with the aid of e-cigarettes.

That was 60% higher than those who did not use the devices, the study said.

Branwen Jeffreys reports.

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