- Correspondence to Prof Nicolaas A Bos, Department of Rheumatology and Clinical Immunology, University of Groningen, University Medical center, Groningen 9712 CP, Netherlands;
- Received 19 October 2017
- Accepted 22 October 2017
- Published online 4 November 2017.
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.