Funding for this research was provided by:
Arthritis Research UK (20031)
Received: 1 September 2018
Accepted: 9 January 2019
First Online: 25 January 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the NRES Committee North West (Greater Manchester North) [12/NW/0841] and the University of Salford Health Sciences Research Ethics Panel prior to the start of the study. Approvals from the Research and Development departments were obtained at each site. All participants provided informed, written consent.
: Not applicable.
: The authors declare that they have no competing interests.
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