- Professor L J Garey, Division of Neuroscience, Imperial College School of Medicine, Charing Cross Hospital, London W6 8RF, UK. Telephone 0044 181 846 7036; fax 0044 181 846 7025; e-mail:
- Received March 20, 1997
- Revised June 18, 1998
- Accepted June 29, 1998
- First published October 1, 1998.
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