About the Authors

Rosie J. Lacey

r.lacey@keele.ac.uk

Affiliation Research Institute for Primary Care & Health Sciences, Keele University, Keele, Staffordshire, United Kingdom

Kelvin P. Jordan

Affiliation Research Institute for Primary Care & Health Sciences, Keele University, Keele, Staffordshire, United Kingdom

Peter R. Croft

Affiliation Research Institute for Primary Care & Health Sciences, Keele University, Keele, Staffordshire, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RJL KPJ PRC. Performed the experiments: RJL KPJ. Analyzed the data: KPJ. Wrote the paper: RJL KPJ PRC.