1. IRCCS-Mario Negri Institute for Pharmacological Research; Milan Italy
2. Department of Neurology; Strong Epilepsy Center; University of Rochester; Rochester New York U.S.A.
3. Stichting Epilepsie Instellingen Nederland (SEIN); Heemstede The Netherlands
4. National Institute for Health Research University College London Hospitals Biomedical Research Centre; University College London Institute of Neurology; London United Kingdom
5. Chalfont Centre for Epilepsy; Chalfont St. Peter United Kingdom