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APA Citation
Farrelly, M. C., Davis, K. C., Nonnemaker, J. M., Kamyab, K., & Jackson, C. (2011). promoting calls to a quitline: quantifying the influence of message theme, strong negative emotions and graphic images in television advertisements. Tobacco control, 20(4), 279–284. http://access.bl.uk/ark:/81055/vdc_100137783303.0x00001a