- Correspondence to Dr Michael M Ward, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Building 10, CRC, Room 4-1339, Bethesda, MD 20892, USA;
- Received May 14, 2013
- Revised September 11, 2013
- Accepted November 10, 2013
- First published December 2, 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.