Tarig Abkur1, Jonathan Cleaver2, Naomi Festa3, Gopinath Ramadurai3. 1. Department of Neurology, Southmead Hospital, Bristol, BS10 5NB, United Kingdom. Tarig.Abkur@nbt.nhs.uk. 2. Department of Neurology, Southmead Hospital, Bristol, BS10 5NB, United Kingdom. 3. Department of Stroke and Vascular Neurology, Southmead Hospital, Bristol, BS10 5NB, United Kingdom.