About the Authors

Ross Wilkie

r.wilkie@keele.ac.uk

Affiliation Arthritis Research UK Primary Care Centre, Primary Care Sciences, Keele University, Keele, Staffordshire, ST5 5BG, United Kingdom

Elaine M. Hay

Affiliation Arthritis Research UK Primary Care Centre, Primary Care Sciences, Keele University, Keele, Staffordshire, ST5 5BG, United Kingdom

Peter Croft

Affiliation Arthritis Research UK Primary Care Centre, Primary Care Sciences, Keele University, Keele, Staffordshire, ST5 5BG, United Kingdom

Glenn Pransky

Affiliation Center for Disability Research, Liberty Mutual Research Institute, 71 Frankland Rd., Hopkinton, Massachusetts, 01748, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RW EH PC GP. Performed the experiments: RW EH PC GP. Analyzed the data: RW EH PC GP. Contributed reagents/materials/analysis tools: RW EH PC GP. Wrote the paper: RW EH PC GP.