About the Authors

Peter S. Blair

p.s.blair@bris.ac.uk

Affiliation School of Social & Community Medicine, University of Bristol, Bristol, United Kingdom

Peter Sidebotham

Affiliation Medical School, University of Warwick, Warwick, United Kingdom

Anna Pease

Affiliation School of Social & Community Medicine, University of Bristol, Bristol, United Kingdom

Peter J. Fleming

Affiliation School of Social & Community Medicine, University of Bristol, Bristol, United Kingdom

Competing Interests

The authors have declared no competing interests exist.

Author Contributions

Conceived and designed the experiments: PSB PJF PS. Performed the experiments: PSB PJF PS. Analyzed the data: PSB PJF PS AP. Contributed reagents/materials/analysis tools: PSB AP. Wrote the paper: PSB PJF PS AP.