- Correspondence to Dr Urs Fischer, Department of Neurology, University of Bern, Inselspital, Freiburgstrasse 4, 3010 Bern, Switzerland;
- Received October 26, 2009
- Revised March 17, 2010
- Accepted March 19, 2010
- First published June 20, 2010.
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.