- Dr F H H Linn, University Department of Neurology, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands email .
- Received July 27, 1999
- Revised October 18, 1999
- Accepted October 28, 1999
- First published March 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.