- Correspondence to Professor Annette van der Helm-van Mil, Rheumatology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands;
- Received January 15, 2020
- Accepted January 15, 2020
- First published January 24, 2020.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.