- Correspondence to:
Professor J K Krauss, Department of Neurosurgery, University Hospital, Klinikum Mannheim, Theodor-Kutzer-Ufer 1–3, 68167 Mannheim, Germany;
- Received June 8, 2001
- Revised September 7, 2001
- Accepted September 17, 2001
- First published February 1, 2002.
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