Harvard scientist finds microbial contaminants in e cigs Harvard Gazette E cigarette Characteristics, Safety Issues, & Regulation Britannica E cigarettes turn Greater Fall River smokers away from smoking even with health effects a question The facts behind e cigarettes and their health risks The Washington Post E Cigarettes May Be More Harmful Than Beneficial According to Evidence Based Research Geisel News New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking