Linking mass media campaigns to pictorial warning labels on cigarette packages: a cross-sectional study to evaluate effects among Mexican smokers
James F Thrasher, Nandita Murukutla, Rosaura Pérez-Hernández, Jorge Alday, Edna Arillo-Santillán, Claudia Cedillo, Juan Pablo Gutierrez
Tobacco Control May 2013, 22 (e1) e57-e65; DOI: 10.1136/tobaccocontrol-2011-050282