1. Sheffield Haemostasis and Thrombosis Centre; Sheffield UK
2. Institute for Clinical Chemistry and Laboratory Medicine; Medical Center - University of Freiburg; Faculty of Medicine; University of Freiburg; Freiburg Germany
3. Department of Laboratory Medicine; Faculty of Medicine; University of Debrecen; Debrecen Hungary
4. Department of Laboratory Medicine; Medical University of Vienna; Vienna Austria
5. Roche Diagnostics GmbH; Mannheim Germany
6. Roche Diagnostics Inc.; Indianapolis Indiana
7. Roche Diagnostics International Ltd; Rotkreuz Switzerland