Funding for this research was provided by:
Versus Arthritis (21755)
Received: 18 August 2019
Accepted: 15 November 2019
First Online: 19 February 2020
Change Date: 2 March 2021
Change Type: Correction
Change Details: A Correction to this paper has been published:
Change Details: https://doi.org/10.1186/S41927-021-00181-8
Ethics approval and consent to participate
: The protocol for this study has been approved by Independent Scientific Advisory Committee for Medicines and Healthcare Regulatory Agency database research (Protocol number: 11_113RA4).
: Not applicable.
: WGD has received consultancy fees from Bayer and Google outside of the submitted work. All other authors have no competing interests.