Funding for this research was provided by:
the Swedish Rheumatism Association. (.)
The Regional board of Southern Sweden research fund (.)
Received: 5 April 2019
Accepted: 28 November 2019
First Online: 9 December 2019
Consent for publication
: All individuals involved in this study provided written consent to use their clinical and imaging data for research purposes.
: The authors declare no conflict of interest.