Merwick Áine, Werring David
National Hospital for Neurology and Neurosurgery, London, UK.
Stroke Research Group, UCL Institute of Neurology, National Hospital for Neurology and Neurosurgery, London WC1N 3BG, UK
BMJ. 2014 May 19;348:g3175. doi: 10.1136/bmj.g3175.