- Correspondence to Dr Richard M Pope, Department of Medicine, Division of Rheumatology, Northwestern University Feinberg School of Medicine, 240 East Huron Street, Suite M300 IL 60611-2909, Chicago;
- Accepted February 24, 2012
- First published April 20, 2012.
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.