- Dr L Schöls, Neurologische Klinik der Ruhr-Universität, St Josef Hospital, Gudrunstraße 56, D - 44791 Bochum, Germany. Tel: 0049 234 509 2410; Fax: 0049 234 509 2414; E-mail:
- Received March 25, 1997
- Revised June 16, 1997
- Accepted June 30, 1997
- First published January 1, 1998.
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