- Dr Gonzalo Alarcón, Department of Clinical Neurophysiology, King’s College Hospital, Denmark Hill, London SE5 9RS, UK. Telephone 0044 171 346 5309; fax 0044 171 346 5308
- Received September 14, 1998
- Revised January 28, 1999
- Accepted February 4, 1999
- First published July 1, 1999.
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