As popularity of e cigarettes rises, more smokers are able to quit, study says Los Angeles Times The 101 on e Cigarettes Infographic American Heart Association Can Vaping Help Smokers Quit? The Real Story from a Real Story RAND The Value of Providing Smokers with Free E Cigarettes: Smoking Reduction and Cessation Associated with the Three Month Provision to Smokers of a Refillable Tank Style E Cigarette Do E Cigarettes Do More Good Than Harm? WSJ