Who Vapes? Correlates of E Cigarette Use in U.S. College Students Nova Science Publishers A systematic review of the effects of e cigarette use on lung function npj Primary Care Respiratory Medicine E cigarette users trying to quit smoking should vape every day, studies suggest Smoking The Guardian E Cigarettes: Perspectives, Regulation and Health Effects Nova Science Publishers How have e cigarettes changed over time? PDF) Patterns of E Cigarette Use Among Youth and Young Adults: Review of the Impact of E Cigarettes on Cigarette Smoking