Funding for this research was provided by:
Arthritis Research UK (18010)
Wellcome Trust (06834)
Text and Data Mining valid from 2018-07-20
Received: 15 May 2017
Accepted: 11 July 2018
First Online: 20 July 2018
Ethics approval and consent to participate
: This study was conducted with the approval of the National Research Ethics Committee, reference 08/H1009/41. All participants gave written, informed consent.
: Not applicable
: The authors declare that they have no competing interests.
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