Impact of tobacco-related health warning labels across socioeconomic, race and ethnic groups: results from a randomized web-based experiment.
Cantrell J, Vallone DM, Thrasher JF, Nagler RH, Feirman SP, Muenz LR, He DY, Viswanath K. PLoS One. 2013; 8(1):e52206. Epub 2013 Jan 14.