About the Authors

Neil S. Ferguson

n.s.ferguson@strath.ac.uk

Affiliation Department of Civil and Environmental Engineering, University of Strathclyde, Glasgow, Scotland, United Kingdom

Karen E. Lamb

Affiliation Medical Research Council Social and Public Health Sciences Unit, Glasgow, Scotland, United Kingdom

Yang Wang

Affiliation Department of Civil and Environmental Engineering, University of Strathclyde, Glasgow, Scotland, United Kingdom

David Ogilvie

Affiliation Medical Research Council Epidemiology Unit and United Kingdom Clinical Research Collaboration Centre for Diet and Activity Research (CEDAR), Cambridge Institute of Public Health, University of Cambridge, Cambridge, England, United Kingdom

Anne Ellaway

Affiliation Medical Research Council Social and Public Health Sciences Unit, Glasgow, Scotland, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: NF DO AE. Analyzed the data: KL YW NF. Wrote the paper: NF KL DO AE.