- Correspondence to Professor Juergen Braun, Rheumazentrum Ruhrgebiet, Herne D-44652, Germany;
- Received March 1, 2016
- Revised August 26, 2016
- Accepted August 27, 2016
- First published September 22, 2016.
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.