- Correspondence to Dr David J Werring, University College London, Institute of Neurology & National Hospital for Neurology and Neurosurgery, Stroke Research Group, Box 6, Queen Square, London WC1N 3BG, UK;
- Received December 6, 2014
- Revised February 17, 2015
- Accepted March 2, 2015
- First published March 26, 2015.
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.