1 NIHR University College London Hospitals Biomedical Research Centre, UCL Institute of Neurology, Department of Clinical and Experimental Epilepsy, London WC1N 3BG, UK.
2 Stichting Epilepsie Instellingen Nederland (SEIN), Heemstede, The Netherlands.
3 Department of Clinical Neurophysiology, University of Twente, Enschede, The Netherlands.
4 Department of Clinical Neurophysiology and Neurology, Medisch Spectrum Twente, Enschede, The Netherlands.
5 Department of Mathematics, Leiden University, Leiden, The Netherlands.