1. Department of Hematology and Medical Oncology and Hemophilia of Georgia Center for Bleeding & Clotting Disorders of Emory Emory University School of Medicine Atlanta GA USA
2. Department of Infection Immunity and Cardiovascular Disease University of Sheffield Sheffield UK
3. Sheffield Haemophilia and Thrombosis Centre Royal Hallamshire Hospital Sheffield UK
4. Department of Haematology Oslo University Hospital Oslo Norway
5. Institute of Clinical Medicine University of Oslo Oslo Norway