About the Authors

Leonie S. Brose

leonie.brose@kcl.ac.uk

Affiliation National Addiction Centre & UK Centre for Tobacco and Alcohol Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, London, United Kingdom

Andy McEwen

Affiliation National Centre for Smoking Cessation and Training & Cancer Research UK Health Behaviour Research Centre, University College London, London, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Analyzed the data: LB. Contributed reagents/materials/analysis tools: LB AM. Wrote the paper: LB AM.