1. Institute for Clinical Neuroscience and Physiology Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
2. Department of Neurology Hospital São Sebastião Centro Hospitalar de Entre o Douro e Vouga Santa Maria da Feira Portugal
3. NHO Shizuoka Institute of Epilepsy and Neurological Disorders Shizuoka Japan
4. UCB Pharma Raleigh NC USA
5. UCB Pharma Brussels Belgium
6. Arkansas Epilepsy Program Clinical Trials Inc Little Rock AR USA