1. Department of Clinical and Experimental Epilepsy; UCL Institute of Neurology; NIHR University College London Hospitals Biomedical Research Centre; London United Kingdom
2. Chalfont Centre for Epilepsy; Chalfont St. Peter United Kingdom
3. Danish Epilepsy Center; Filadelfia; Dianalund Denmark
4. Department of Neurology; University of California Davis; Sacramento California U.S.A.
5. Department of Neurology; Columbia University; New York New York U.S.A.