1. SEIN - Epilepsy Institute in the Netherlands Foundation, Heemstede, The Netherlands, P.O. Box 540, 2130 AM Hoofddorp, The Netherlands
2. Department of Neurology, Brain Center Rudolf Magnus, University Medical Centre Utrecht, Utrecht, The Netherlands
3. NIHR University College London Hospitals Biomedical Research Centre, UCL Institute of Neurology, Queen Square, London WC1N 3BG, United Kingdom
4. Epilepsy Society, Chalfont St Peter, SL9 0RJ, United Kingdom