- Professor CM Wiles, Department of Medicine (Neurology), University Hospital of Wales, Heath Park, Cardiff CF4 4XW, Wales, UK.Telephone 0044 1222 743798; fax 0044 1222 744166; email:
- Received June 2, 1997
- Revised August 28, 1997
- Accepted September 9, 1997
- First published March 1, 1998.
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