Here is Glantz's accusation: "the e-cigarette companies (which are, increasingly owned by cigarette companies) are mobilizing the same network of right-wing think tanks that the cigarette companies have used for years to push their policy agenda, often linked with the tobacco companies' development of the Tea Party and related groups. John Mashey, a member of the Center for Tobacco Control Research and Education's Advisory Committee, sent me a few good examples. ... The more things change the more they stay the same."

Here, they find a correlation between e-cigarette use and higher and more sustained levels of smoking. But because this is a cross-sectional study, they cannot determine which came first. In other words, what is the direction of the causal relationship? Does the e-cigarette use precede, and cause, the smoking? Or does the smoking precede, and cause, the e-cigarette use?

LAST：3.3~4.8V ego mega adjustable voltage ego battery vaporizer with 2600mah capacity |NEXT：2014 Most Popular e cigarette Clear atomizer CE5 Best Price