1. Institute of Transfusion Medicine and Immunology, Heidelberg University, Medical Faculty Mannheim, German Red Cross Blood Service Baden-Württemberg – Hessen, Mannheim Germany
2. Institute of Clinical Hemostaseology and Transfusion Medicine, Saarland University and Saarland University Medical Center, 66421 Homburg, Germany
3. Center of Hemostasis and Thrombosis, Zurich, Switzerland
4. Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria