16 abril 2015
E-cigarettes are popular with teens, including those who have never smoked, but few of those who try them become regular users, while most of those who do so are also smokers, finds research. Researchers also found that the use of e-cigarettes at least once was more common than having smoked a conventional cigarette among all age groups, except the oldest (15-16 year olds).
http://feeds.sciencedaily.com/~r/sciencedaily/~3/Mp53TpLbcco/150415203535.htm
