1. Department of Haematology and Cardiometabolic BRC, University College London Hospitals/University College London, London, United Kingdom;
2. Division of Hematology and Hemostasis, Department of Medicine 1, Medical University of Vienna, Austria;
3. Jena University Hospital, Jena, Germany;
4. Department of Medicine, Houston Methodist Hospital, Weill Cornell Medical College, Houston, TX;
5. Department Disorders of Hemostasis and Internal Medicine, Institute of Hematology and Transfusion Medicine, Warsaw, Poland;
6. Department of Pediatric Hematology and Oncology, Universitaetsklinikum Hamburg-Eppendorf, Hamburg, Germany;
7. Inselspital, University Hospital Bern, Bern, Switzerland;
8. Tokyo Medical and Dental University Hospital Faculty of Medicine, Tokyo, Japan;
9. Nara Medical University, Nara, Japan;
10. Quintiles, Milan, Italy;
11. Shire, Vienna, Austria; and
12. Shire, Cambridge, MA