1. Center for Clinical Transfusion Medicine, Tuebingen, Germany;
2. Institute for Clinical and Experimental Transfusion Medicine, Medical Faculty of Tuebingen, University Hospital of Tuebingen, Tuebingen, Germany;
3. Institute for Pathology, University Hospital of Ulm, Ulm, Germany;
4. Department of Neurology & Stroke, Eberhard-Karls University, Tuebingen, Germany;
5. Department of Anaesthesiology and Intensive Care Medicine, University Hospital of Tuebingen, Tuebingen, Germany;
6. Department of Internal Medicine IV, Section of Nephrology and Hypertension, University Hospital of Tuebingen, Tuebingen, Germany;
7. Division of Vascular Neurology and
8. Institute for Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany,
9. Institute of Clinical Chemistry and Laboratory Medicine, Medical Centre–University of Freiburg, Freiburg im Breisgau, Germany;
10. Department of Neuroradiology, Klinikum Stuttgart, Stuttgart, Germany;
11. Department of Neurology, Krankenhaus der Barmherzigen Brüder Trier, Trier, Germany;
12. Department of Neurology, University Hospital Heidelberg, Heidelberg, Germany;
13. Department of Thrombosis and Hemostasis, Institute of Immunology and Transfusion Medicine, Giessen, Germany; and
14. Institute for Pathology and Neuropathology, University Hospital of Tuebingen, Tuebingen, Germany