What are the respiratory effects of e cigarettes? The BMJ The Dangers of Vaping Oral Health Perspective Cardiopulmonary Impact of Electronic Cigarettes and Vaping Products: A Scientific Statement From the American Heart Association Circulation Student Vaping Still a Health and Safety Issue in Schools NEA E Cigarette Use Among Youth Smoking and Tobacco Use CDC Can vaping damage your lungs? What we do (and don't) know Harvard Health