From the Department of Radiology, Royal National Orthopaedic Hospital, London, UK.
Address correspondence and reprint requests to Silvia Costa Dias, Royal National Orthopaedic Hospital, Stanmore, London HA7 4LP, United Kingdom; E-mail: email@example.com
Acknowledgment date: November 10, 2011. First revision date: December 7, 2011. Acceptance date: December 16, 2011.
The manuscript submitted does not contain information about medical device(s)/drug(s).
No 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.