1. Haemophilia & Thrombosis Center, University of Colorado Anschutz Medical Campus and Children's Hospital ColoradoAurora Colorado
2. Division of Blood DisordersNational Center for Birth Defects and Developmental Disabilities, Centers for Disease Control and PreventionAtlanta Georgia
3. The Haemophilia Center, Oregon Health & Science UniversityPortland Oregon
4. American Thrombosis and Hemostasis NetworkRiverwoods Illinois
5. Haemophilia Foundation of MichiganYpsilanti Michigan
6. Regional Comprehensive Haemophilia Treatment Center, Icahn School of Medicine at Mount SinaiNew York New York
7. Haemophilia Diagnostic and Treatment Center, University of North Carolina at Chapel HillChapel Hill North Carolina
8. Center for Bleeding and Clotting Disorders, Michigan State UniversityEast Lansing Michigan