Funding for this research was provided by:
Engineering and Physical Sciences Research Council (EP/L016346/1)
Arthritis Research UK (H0671)
Received: 16 May 2019
Accepted: 20 November 2019
First Online: 30 November 2019
Ethics approval and consent to participate
: Ethical approval was provided by the United Kingdom National Research Ethics Service (East of Scotland Research Ethics Service, 11/ES/1044) and informed written consent for the use of their tissue for research was given by all patients.
: Not applicable.
: The authors declare that they have no competing interests.