- Correspondence to Dr Hector Chinoy, National Institute for Health Research Manchester Musculoskeletal Biomedical Research Unit, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, The University of Manchester, Manchester, UK;
- Received 31 May 2017
- Revised 28 July 2017
- Accepted 1 August 2017
- Published online 30 August 2017.
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