About the Authors

Suzanna E. Forwood

Sef26@cam.ac.uk

Affiliation Behaviour and Health Research Unit, University of Cambridge, Cambridge, United Kingdom

Alexander D. Walker

Affiliation Behaviour and Health Research Unit, University of Cambridge, Cambridge, United Kingdom

Gareth J. Hollands

Affiliation Behaviour and Health Research Unit, University of Cambridge, Cambridge, United Kingdom

Theresa M. Marteau

Affiliation Behaviour and Health Research Unit, University of Cambridge, Cambridge, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AW SF TM. Performed the experiments: AW. Analyzed the data: SF. Wrote the manuscript: SF GH TM.