E cigarettes and health: the jury is still out Harvard Health E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA E Cigarettes Public Health Law Center Long term Vaping Effects Unknown? Separating Science From Hype as E Cigarette Debate Rages American Council on Science and Health E Cigarettes, by Other Names, Lure Young and Worry Experts The New York Times Electronic cigarettes can be dangerous, even if you don't smoke them Los Angeles Times