Funding for this research was provided by:
Arthritis Research UK (Grant Ref. 21405)
The study was supported by the Practice Research Foundation of Danish Physiotherapists (N/A)
Received: 15 December 2019
Accepted: 17 June 2020
First Online: 23 June 2020
Ethics approval and consent to participate
: The DK cohort study was approved by The Danish Data Protection Agency (J no.1–16–02-542-16). According to Danish law, approval by the ethics committee and written informed consent was not required. The eligible patients were provided with information about the study and its purpose, including that participation was voluntary. For the UK cohort ethics was obtained separately from the UK NHS Health Research Authority National Research Ethics Service Committee (approval reference: 15/YH/0167 and 15/WA/0040).
: Not applicable.
: We declare no competing interests.