Brennan, EmilyJeong, MichelleMomjian-Kybert, AniHornik, Robert2023-05-222023-05-222016-01-012016-12-14https://repository.upenn.edu/handle/20.500.14332/2134CommunicationSocial and Behavioral SciencesPreventing and Reducing Tobacco Use among Youth and Young Adults: A Systematic Review of the Effectiveness of Mass Media Interventions, 2008-2013Working Paper