- Correspondence to: Professor G Deuschl, Neurologische Klinik der Christian-Albrechts-Universität zu Kiel, Niemannsweg 147, 2405 Kiel, Germany;
- Received November 19, 2001
- Accepted February 14, 2002
- Revised February 11, 2002
- First published September 1, 2002.
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