- Correspondence to: Dr Stefan Schwarz, Department of Neurology, Klinikum Mannheim of the University of Heidelberg, 1–3 Theodor-Kutzer Ufer, Mannheim 68167, Germany;
- Received November 7, 2002
- Accepted January 28, 2003
- Revised January 27, 2003
- First published June 1, 2003.
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