1. Department of Clinical and Experimental Epilepsy; UCL Institute of Neurology, Queen Square; London WC1N 3BG United Kingdom
2. Divisions of Neuropathology; National Hospital for Neurology and Neurosurgery, Queen Square; London WCN1BG UK
3. Department of Biomedical Sciences; University of Westminster; London W1W 6UW United Kingdom
4. Department of Neuropathology; UCL Institute of Child Health and Great Ormond Street Hospital for Children; London United Kingdom
5. Neurosurgery at the National Hospital for Neurology and Neurosurgery, Queen Square; London WCN1BG United Kingdom
6. The Chalfont Centre for Epilepsy, Chesham Lane, Chalfont St Peter; Buckinghamshire SL9 0RJ United Kingdom
7. Department of Neuropsychology; National Hospital for Neurology and Neurosurgery, Queen Square; London WCN1BG UK
8. Department of Neurology; National Hospital for Neurology and Neurosurgery, Queen Square; London WCN1BG UK