[1] Cleveland Clin, Epilepsy Ctr, Cleveland, OH 44106 USA
[2] Harvard Univ, Sch Med, Dept Neurol, Boston Childrens Hosp,Div Epilepsy & Clin Neuroph, Boston, MA 02115 USA
[3] Sunovion Pharmaceut Inc, Marlborough, MA USA
[4] BIAL Portela & Ca SA Coronado S Romao & S Mamede, Coimbra, Portugal