- Dr Mikio Shoji, Department of Neurology, Gunma University School of Medicine, 3–39–22 Showamachi, Maebashi, Gunma 371–8511, Japan email
- Received March 31, 1999
- Revised November 24, 1999
- Accepted December 3, 1999
- First published May 1, 2000.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.