[1] Stanford Univ, Med Ctr, Dept Neurol, Stanford, CA 94305 USA
[2] Stichting Epilepsie Instellingen, Dept EEG & EMU, Heemstede, Netherlands
[3] Univ Western Ontario, London Hlth Sci Ctr, London, England
[4] Univ Bonn, Clin Epileptol, D-5300 Bonn, Germany
[5] Hop Henri Gastaut, Ctr St Paul, Marseille, France
[6] British Epilepsy Assoc, Leeds, W Yorkshire, England
[7] Univ Calif Los Angeles, David Geffen Sch Med, Dept Neurol, Los Angeles, CA USA