NEW STUDY SHEDS LIGHT ON YOUTH E CIGARETTE USE: PROPOSES ENHANCED DEFINITIONS AND IMPROVED SURVEILLANCE MEASURES CoEHAR Youth E Cigarette Use Drops to Lowest Level in a Decade Cancer Health E Cigarettes Top Smoking Among Youths, Study Says The New York Times The Demographics of E Cigarette Users [Part 1 of 3 Part Series] Friends' approval of e cigarettes may turn teens toward vaping, USC study suggests Los Angeles Times