1. Department of Anaesthesiology, Klinikum Kassel, Kassel, Germany;
2. Department of Neurology, Philipps-University Marburg, Marburg, Germany;
3. Dr. Reinfried Pohl-Centre for Medical Education, Marburg, Germany;
4. Epilepsy Center Frankfurt Rhine-Main, Center of Neurology and Neurosurgery, Goethe-University, Frankfurt, Germany