[1] Univ Amsterdam, Acad Med Ctr, Dept Neurol, NL-1100 DD Amsterdam, Netherlands
[2] Epilepsy Ctr de Klokkenberg, Breda, Netherlands
[3] Med Univ Lubeck, Dept Neurol, Lubeck, Germany
[4] Med Univ Lubeck, Dept Human Genet, Lubeck, Germany
[5] Oregon Hlth & Sci Univ, Dept Neurol, Portland, OR 97201 USA
[6] Albert Einstein Coll Med, Dept Mol Genet, Bronx, NY 10467 USA