1. Epileptology; University Hospital Bonn; Bonn Germany
2. Bethel Epilepsy Center; Bielefeld Germany
3. Department of Neurosurgery; Knappschaftskrankenhaus; University Bochum; Bochum Germany
4. Department of Neurosurgery; University Hospital Bonn; Bonn Germany
5. Department of Neurology; University Hospital Erlangen; Erlangen Germany