1. Department of Internal Medicine III, Ulm University Medical Centre, Ulm, Germany
2. Department of Neurology, Ulm University and RKU – University and Rehabilitation Clinics Ulm, Oberer Eselsberg 45, 89081 Ulm, Germany
3. Department of Neurosurgery, Ulm University Medical Centre, Ulm, Germany
4. Department of Neurology, Ulm University and RKU – University and Rehabilitation Clinics Ulm, Ulm, Germany
5. Department of Neuroradiology, Ulm University/Bezirkskrankenhaus Guenzburg, Guenzburg, Germany
6. Department of Internal Medicine III, Ulm University Medical Centre, Ulm, Germany; Medical Department, Division of Hematology, Oncology and Tumour Immunology, Charité Universitätsmedizin Berlin, Germany