- Correspondence to: Dr E Davies Thames Cancer Registry, Guy’s, King’s, and St Thomas’s School of Medicine, 1st Floor, Capital House, 42 Weston Street, London SE1 3QD, UK;
- Received January 7, 2004
- Accepted August 7, 2004
- Revised July 27, 2004
- First published March 16, 2005.
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