About the Authors

Karolina Wartolowska

karolina.wartolowska@ndorms.ox.ac.uk

Affiliation Botnar Institute of Musculoskeletal Sciences, Nuffield Department of Orthopedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom

David J. Beard

Affiliation Botnar Institute of Musculoskeletal Sciences, Nuffield Department of Orthopedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom

Andrew J. Carr

Affiliation Botnar Institute of Musculoskeletal Sciences, Nuffield Department of Orthopedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom

Competing Interests

The authors have the following interests: This survey was performed in relation to a placebo-controlled surgical trial on shoulder pain (NCT01623011), in which all the authors are involved. There are no patents, products in development, or marketed products to declare. This does not alter the authors' adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: KW AJC DJB. Performed the experiments: KW AJC. Analyzed the data: KW AJC. Wrote the paper: KW AJC DJB.