- Correspondence to: Dr M Swash Department of Neurology, Royal London Hospital, London E1 1BB, UK;
- Received November 10, 2003
- Accepted January 14, 2004
- Revised November 10, 2003
- First published September 16, 2004.
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.