About the Authors

Jim McCambridge

Jim.McCambridge@lshtm.ac.uk

Affiliation Centre for Research on Drugs & Health Behaviour, Department of Public Health & Policy, London School of Hygiene & Tropical Medicine, London, United Kingdom

John McAlaney

Affiliation Centre for Research on Drugs & Health Behaviour, Department of Public Health & Policy, London School of Hygiene & Tropical Medicine, London, United Kingdom

Richard Rowe

Affiliation Department of Psychology, University of Sheffield, Sheffield, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

ICMJE criteria for authorship read and met: J McCambridge, J McAlaney, R Rowe. Agree with the manuscript's results and conclusions: J McCambridge, J McAlaney, R Rowe. Designed the experiments/the study: J McCambridge, J McAlaney, R Rowe. Analyzed the data: J McCambridge. Collected data/did experiments for the study: J McCambridge, J McAlaney. Wrote the first draft of the paper: J McCambridge. Contributed to the writing of the paper: J McCambridge, J McAlaney, R Rowe.