- Correspondence to: Dr S Kamei Division of Neurology, Department of Medicine, Nihon University School of Medicine, 30-1 Oyaguchi-kamimachi, Itabashi-ku, Tokyo 173-8610, Japan;
- Received July 14, 2004
- Accepted May 7, 2005
- Revised April 30, 2005
- First published October 14, 2005.
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