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Description
overall health beta=-0.19, CI [-0.37,-0.00])

The response of smokers to health warnings on packs in the United Kingdom and Norway following the introduction of standardized packaging

9,10,32,33 In Korea, youth ever use of e-cigarettes rose from 0.5% in 2008 to 9.4% in 2011, 10 and in the United States, it rose from 3.3% in 2011 to 6.8% in 2012

A puff can range from 13 seconds or more

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