Teens say they don't vape, they 'Juul.' That makes the activity hard to track Los Angeles Times Dartmouth led Study Shows E Cigarette Switching Can Ease Respiratory Symptoms Geisel News Is e cigarette use in adolescents associated with continued smoking years later? The new vaporizer that could shake up the e cigarette world! ForbiddenFruitz E cigarettes less addictive than cigarettes Penn State University Is the Nicotine in E Cigarettes Harmful for Your Health? Scientific American