About the Authors

Laura Johnson

Affiliations Cancer Research UK Health Behavior Research Centre, Department of Epidemiology and Public Health, University College London, London, United Kingdom, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom

Clare H. Llewellyn

Affiliation Cancer Research UK Health Behavior Research Centre, Department of Epidemiology and Public Health, University College London, London, United Kingdom

Cornelia H. M. van Jaarsveld

Affiliation Cancer Research UK Health Behavior Research Centre, Department of Epidemiology and Public Health, University College London, London, United Kingdom

Tim J. Cole

Affiliation MRC Centre of Epidemiology for Child Health, Institute of Child Health, University College London, London, United Kingdom

Jane Wardle

j.wardle@ucl.ac.uk

Affiliation Cancer Research UK Health Behavior Research Centre, Department of Epidemiology and Public Health, University College London, London, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JW LJ CHMvJ CHL TJC. Analyzed the data: LJ CHL TJC. Wrote the paper: LJ CHL TJC JW CHMvJ. Obtained funding for the study: JW.