Effects of tobacco-related media campaigns on smoking among 20–30-year-old adults: longitudinal data from the USA
Yvonne M Terry-McElrath, Sherry Emery, Melanie A Wakefield, Patrick M O'Malley, Glen Szczypka, Lloyd D Johnston
Tobacco Control Jan 2013, 22 (1) 38-45; DOI: 10.1136/tobaccocontrol-2011-050208