- Dr Jan Lycke, Institute of Clinical Neuroscience, Department of Neurology, Göteborg University, Sahlgrenska University Hospital, S-413 45 Göteborg, Sweden. Telephone 0046 31 603210; fax 0046 31 602467.
- Received January 31, 1997
- Revised August 22, 1997
- Accepted August 29, 1997
- First published March 1, 1998.
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