1. Department of Neurology and Clinical Neuroscience Center University Hospital and University of Zurich Zurich Switzerland
2. Institute for Intensive Care Medicine, University Hospital Zurich Zurich Switzerland
3. Institute of Clinical Chemistry, University Hospital Schleswig‐Holstein Kiel Germany
4. Swiss Epilepsy Center, Klinik Lengg Zurich Switzerland
5. Department of Neurosurgery and Clinical Neuroscience Center University Hospital and University of Zurich Zurich Switzerland