- Correspondence to: S Yamada Department of Neurology, Kohnodai Hospital, Kohnodai 1-7-1, Ichikawa-shi, Chiba 272-8516, Japan;
- Received February 29, 2004
- Accepted August 8, 2004
- Revised August 6, 2004
- First published March 16, 2005.
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