1. Department of Neurology; Epilepsy Center Frankfurt Rhine-Main; Goethe-University; Frankfurt am Main Germany
2. Epilepsy Center Hessen and Department of Neurology; Philipps-University; Marburg Germany
3. Senckenberg Institute of Neurooncology; Goethe-University; Frankfurt am Main Germany
4. Department of Neurosurgery; Philipps-University; Marburg Germany
5. Department of Geriatrics; University Duisburg-Essen; Essen Germany
6. Department of Neurosurgery; Goethe-University; Frankfurt am Main Germany
7. Department of Neurology and Epilepsy Center; Ernst-Moritz-Arndt-University; Greifswald Germany
8. Institute of Health Service Research and Clinical Epidemiolgy and Coordinating Center for Clinical Trials; Philipps-University; Marburg Germany