Funding for this research was provided by:
Arthritis Research UK (21577, 21577)
RCUK | MRC | Medical Research Foundation (MR/S008020/1, MR/S008020/1)
Received: 8 June 2020
Revised: 9 February 2021
Accepted: 12 February 2021
First Online: 19 March 2021
Conflict of interest
: The authors declare no competing interests.
: Ethics approval was obtained from the local Lothian Research Ethics Committee (AMREC 15-HV-013 and CIR 20-HV-069) and all blood donors gave informed consent.