1. Department of Thrombosis and Hemostasis, and Coagulation Reference Laboratory; Department of Clinical Chemistry and Laboratory Medicine; Leiden University Medical Center; Leiden the Netherlands
2. Fondazione Luigi Villa; Milano Italy
3. Hemostasis Reference Laboratory; Hamilton Canada
4. Technoclone GmbH; Vienna Austria
5. National Coagulation Laboratory; St James's Hospital; Dublin Ireland
6. Haematology Laboratory; Pathology Department; Alfred Health; Melbourne Australia
7. Department of Laboratory Hematology and Hemostasis Center; Landspitali University Hospital and University of Iceland School of Medicine; Reykjavik Iceland
8. Department of Clinical Biochemistry; Hospital of South West Jutland and Unit for Health Promotion Research; Institute of Public Health; University of Southern Denmark; Esbjerg Denmark
9. Sheffield Haemophilia and Thrombosis Centre; Royal Hallamshire Hospital; Sheffield UK
10. Department of Angiology and Blood Coagulation; University Hospital S. Orsola-Malpighi; Bologna Italy
11. Department of Clinical and Experimental Medicine; Linköping University; Linköping Sweden
12. Department of Coagulation; Hammersmith Hospital; Imperial College Healthcare NHS Trust; London UK
13. Grupo Bioquímico, Laboratorio Central del Hospital Italiano de Buenos Aires; Buenos Aires Argentina
14. Department of Hematology-Oncology; School of Medicine; Pontifical Catholic University of Chile; Santiago Chile
15. Clinical Cardiology; Department of Cardiac, Thoracic, and Vascular Sciences; University of Padova; Padova Italy
16. Haemophilia Laboratory (HSL); Katharine Dormandy Haemophilia and Thrombosis Centre; Royal Free Hospital; London UK
17. Department of Transfusion Medicine and Immunohaematology; St John's Medical College Hospital; Bangalore India
18. Hemostasis Laboratory; St István and St László Hospital; Budapest Hungary
19. Department of Clinical Pathology; Faculty of Medicine; Siriraj Hospital; Mahidol University; Bangkok Thailand
20. Roche Diagnostics GmbH Mannheim; Mannheim Germany
21. Angelo Bianchi Bonomi Hemophilia and Thrombosis Center; Department of Clinical Sciences and Community Health; Università degli Studi di Milano and IRCCS Cà Granda Maggiore Hospital Foundation; Milano Italy