- Correspondence to: Dr Jonathan H Gillard Department of Radiology, Addenbrooke’s Hospital and the University of Cambridge, Cambridge CB2 2QQ, UK;
- Received 23 May 2004
- Accepted 8 December 2004
- Revised 7 December 2004
- Published in print 1 July 2005.
- Published online 16 June 2005.
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