- Correspondence to Sylvain Mathieu, Rheumatology Department, Gabriel Montpied Teaching Hospital, Clermont-Ferrand 63003, France;
- Received 7 November 2017
- Accepted 8 November 2017
- Published online 16 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.