- Correspondence to: Dr Jens Kuhn Department of Neurology, Kliniken der Stadt Köln, Krankenhaus Merheim, Ostmerheimerstrasse 200, D-51109 Cologne, Germany;
- Received May 26, 2004
- Accepted October 10, 2004
- Revised August 27, 2004
- First published June 16, 2005.
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