1 Institute for Social Marketing, School of Health Sciences, University of Stirling, Stirling, United Kingdom; UK Centre for Tobacco and Alcohol Studies; Linda.Bauld@stir.ac.uk.
2 Institute for Social Marketing, School of Health Sciences, University of Stirling, Stirling, United Kingdom; UK Centre for Tobacco and Alcohol Studies;
3 UK Centre for Tobacco and Alcohol Studies; National Addiction Centre, Institute of Psychiatry, Psychology and Neuroscience, Kings College London, London, United Kingdom.