Though the headline reads "Use of E-Cigs Rises Sharply Among Teenagers", it's actually a very well balanced article and suggests rise in teen vaping may be responsible for 25% teen reduction in smoking cigarettes - check it out:
http://www.nytimes.com/2015/04/17/h....html?emc=edit_na_20150416&nlid=53545873&_r=0
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http://www.nytimes.com/2015/04/17/h....html?emc=edit_na_20150416&nlid=53545873&_r=0
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