1. Institute of Experimental Hematology and Transfusion Medicine, University Hospital Bonn, Bonn, Germany
2. Institute of Clinical Chemistry and Laboratory Medicine, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
3. Siemens Healthcare Diagnostics Products GmbH, Marburg, Germany
4. Siemens Healthcare GmbH, Eschborn, Germany
5. Medical Clinic 2, Institute of Transfusion Medicine, University Hospital Frankfurt, Frankfurt, Germany
6. Department of Thrombosis and Hemostasis, Giessen University Hospital, Giessen, Germany
7. Institute for Clinical Immunology and Transfusion Medicine, Justus Liebig University, Giessen, Germany
8. Center of Hemostasis, MVZ Labor Dr. Reising-Ackermann und Kollegen, Leipzig, Germany