- Correspondence to Dr Paul F Worth, Department of Neurology, Norfolk and Norwich Hospital NHS Foundation Trust, Colney Lane, Norwich NR4 7UY, UK;
- Received November 9, 2012
- First published March 13, 2013.
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.