- Correspondence to Professor J M Worthington, Department of Neurology, Liverpool Health Service, Elizabeth Street, Liverpool, Sydney, NSW 2170, Australia;
- Received September 11, 2012
- Accepted September 20, 2012
- First published November 14, 2012.
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.