- Dr Masahiro Mori, Department of Neurology, Chiba University School of Medicine, 1–8–1 Inohana, Chuo-ku, Chiba, 260–8670 Japan. Telephone 0081 43 222 7171 ext 5414; fax 0081 43 226 2160; email.
- Received April 15, 1999
- Revised June 17, 1999
- Accepted June 23, 1999
- First published November 1, 1999.
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