Ann McNeill1, L S Brose2, R Calder2, S C Hitchman2, P Hajek3, H McRobbie3. 1. Institute of Psychiatry, Psychology and Neuroscience, National Addiction Centre, King's College London, London SE5 8BB, UK, and UK Centre for Tobacco and Alcohol Studies ann.mcneill@kcl.ac.uk. 2. Institute of Psychiatry, Psychology and Neuroscience, National Addiction Centre, King's College London, London SE5 8BB, UK, and UK Centre for Tobacco and Alcohol Studies. 3. Wolfson Institute of Preventive Medicine Barts and The London School of Medicine and Dentistry Queen Mary, University of London, London, UK, and UK Centre for Tobacco and Alcohol Studies.