- D van der Heijde, Department of Rheumatology, Leiden University Medical Center, Leiden, PO Box 9600, 2300 RC Leiden, The Netherlands;
- Accepted August 1, 2007
- First published August 29, 2007.
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.