2. Bullen C, Howe C, Laugesen M, McRobbie H, Parag V, Williman J, et al. Electronic cigarettes for smoking cessation: a randomised controlled trial. Lancet 2013;382(9905):1629-1637.
3. Giovenco DP, Delnevo CD. Prevalence of smoking cessation by electronic cigarette use status in a national sample of recent smokers. Addict Behav 2018;76:129-134.
9. Singh T, Arrazola RA, Corey CG, Husten CG, Neff LJ, Homa DM, et al. Tobacco use among middle and high school students-United States, 2011-2015. MMWR Morb Mortal Wkly Rep 2016;65(14):361-367.
11. Bauld L, MacKintosh AM, Ford A, McNeill A. E-cigarette uptake amongst UK youth: experimentation, but little or no regular use in nonsmokers. Nicotine Tob Res 2016;18(1):102-103.
13. National Academies of Sciences, Engineering, and Medicine. Health and Medicine Division. Board on Population Health and Public Health Practice. Committee on the Review of the Health Effects of Electronic Nicotine Delivery Systems. Public health consequences of e-cigarette. Washington: National Academies Press; 2018.
16. Eriksen M, Mackay J, Schluger N, Gomeshtapeh FI, Drope J. The Tobacco Atlas. 5th ed. Atlanta: The American Cancer Society; 2015.
19. Gartner C, Hall W. Harm reduction policies for tobacco users. Int J Drug Policy 2010;21(2):129-130.