- Correspondence to Dr Christoph A Mayer, Department of Neurology, Goethe-University Frankfurt, Schleusenweg 2–16, 60528 Frankfurt am Main, Germany;
- Received October 8, 2010
- Revised December 8, 2010
- Accepted December 11, 2010
- First published February 4, 2011.
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.