From the *Academic Rheumatology, University of Nottingham Clinical Sciences Building, Nottingham, UK; and †Back Pain Unit, King's Mill Hospital, Sherwood Forest Hospitals NHS Foundation Trust, Sutton-in-Ashfield, UK.
Acknowledgment date: October 19, 2006. First revision date: May 4, 2007. Second revision date: November 7, 2007. Acceptance date: November 7, 2007.
The manuscript submitted does not contain information about medical device(s)/drug(s).
Funds were received in support of this work. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this manuscript.
This project was financially supported by the Sherwood Forest Hospitals NHS Foundation Trust.
Research Ethics Committee approval: This study was approved by the North Nottinghamshire Local Research Ethics Committee.
Address correspondence and reprint requests to David Andrew Walsh, PhD, FRCP, Academic Rheumatology, University of Nottingham Clinical Sciences Building, City Hospital, Hucknall Road, Nottingham NG5 1PB, UK; E-mail: [email protected]