1. Charité Universitätsmedizin; Berlin Germany
2. Universitair Medisch Centrum; Utrecht The Netherlands
3. Minnesota Epilepsy Group; St Paul Minnesota
4. Novartis Pharmaceuticals Corporation; East Hanover New Jersey USA
5. Novartis Pharma Corporation; S.A.S. Rueil-Malmaison France
6. Royal Sussex County Hospital; Brighton UK
7. Lebonheur Children's Hospital and the University of Tennessee; Memphis Tennessee USA