- Correspondence to Lotte Heimans, Department of Rheumatology, Leiden University Medical Center, PO Box 9600, Leiden 2300 RC, The Netherlands;
- Received November 11, 2012
- Revised December 21, 2012
- Accepted December 29, 2012
- First published January 19, 2013.
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.