- Correspondence to Prof David J Werring, Clinical Neurology, Stroke Research Centre, UCL Institute of Neurology, Box 6, National Hospital for Neurology and Neurosurgery, Queen Square, London WC1N 3BG, UK;
- Received July 9, 2016
- Revised October 28, 2016
- Accepted November 6, 2016
- First published January 3, 2017.
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