1. Department of Neurosurgery, Neurological Institute of New York, New York Presbyterian Hospital—Columbia University Irving Medical Center , New York, NY , USA
2. Stichting Epilepsie Instellingen Nederland (SEIN) , P.O. Box 540, 2130 AM Heemstede , Netherlands
3. UCL Queen Square Institute of Neurology , University College London, London WC1N 3BG, UK
4. Chalfont Centre for Epilepsy , Chalfont St Peter, London , UK
5. Department of Neurology, West China Hospital, Sichuan University , Chengdu 610041 , China
6. Department of Neurology, Leiden University Medical Centre , Albinusdreef 2, 2333 ZA Leiden , Netherlands