Do e cigarettes kill you? Researchers don't know. Vox New Study Highlights Increased Sales of E Cigarettes in Flavors Appealing to Youth CDC Foundation Is e cigarette use in adolescents associated with continued smoking years later? Why Flavored E Cigarettes are Bad for You Roswell Park Comprehensive Cancer Center Buffalo, NY Teens say they don't vape, they 'Juul.' That makes the activity hard to track Los Angeles Times Vaping: The new wave of nicotine addiction Cleveland Clinic Journal of Medicine