Frontiers Electronic cigarette use and consumption patterns in medical university students Lung cancer risks persist with e cigarette use after quitting tobacco smoking Notes from the Field: Use of Electronic Cigarettes and Any Tobacco Product Among Middle and High School Students United States, 20112018 MMWR Dangers of E Cigarette Use and Vaping Among Teens WakeMed Voices Blog Vaping on the rise: Colorado youth use e cigarettes at twice the national average VailDaily.com California holds youth vaping below half the national average while almost eliminating smoking Stanton Glantz blog