- Professor Harvey J Sagar, University of Sheffield, Department of Clinical Neurology, N Floor, Royal Hallamshire Hospital, Glossop Road, Sheffield S10 2JF, UK.
- Received October 27, 1997
- Revised April 7, 1998
- Accepted April 16, 1998
- First published November 1, 1998.
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.