- Correspondence to Rosanne Koevoets, Department of Rheumatology, Leiden University Medical Centre, Postbus 9600, 2300 RC Leiden, The Netherlands;
- Accepted March 21, 2011
- First published May 8, 2011.
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.