1. Division of Hematology New York Presbyterian Hospital – Weill Cornell New York New York
2. Division of Pathology and Laboratory Medicine University of Pennsylvania Philadelphia Pennsylvania
3. Division of Hematology University of Washington Seattle Washington
4. Division of Hematology/Oncology Georgetown University Medical Center, Lombardi Comprehensive Cancer Center Washington District of Columbia
5. Centre Hospitalier Universitaire Henri‐Mondor Université Paris Est Creteil Creteil France
6. The Bleeding and Clotting Disorders Institute University of Illinois College of Medicine‐Peoria Peoria Illinois
7. Division of Hematology and Transfusion Medicine Lund University Lund Sweden
8. Department of Medicine, Michael G. DeGroote School of Medicine, McMaster Centre for Transfusion Research McMaster University Hamilton Ontario Canada
9. Division of Hematology Children's Hospital of Philadelphia Philadelphia Pennsylvania
10. Department of Pediatrics Perelman School of Medicine at the University of Pennsylvania Philadelphia Pennsylvania
11. Division of Pediatric Hematology/Oncology New York Presbyterian Hospital – Weill Cornell New York New York