1. Belgian Red Cross‐Flanders, Belgium
2. The Children's Hospital of Philadelphia, University of Pennsylvania School of MedicinePhiladelphiaPennsylvania
3. Center for Innovation, Canadian Blood ServicesToronto Canada
4. Blood Bank, Division of Transfusion MedicineBrigham and Women's HospitalBoston Massachusetts
5. Guy's and St. Thomas’ NHS Foundation Trust London, United Kingdom
6. Departments of Pathology and Pediatrics, Emory University School of Medicine, and Blood, Tissue and Apheresis ServicesChildren's Healthcare of AtlantaAtlanta Georgia
7. Departments of Paediatrics and MedicineUniversity of Toronto, Division of Paediatric and Adult Haematology, Hospital for Sick Children, University of TorontoToronto Canada
8. Pathology Services, Australian Red Cross Blood Services; Austin Hospital; and The Royal Melbourne HospitalMelbourne Australia
9. Diagnostic Laboratories and Blood Research Institute, BloodCenter of WisconsinMilwaukee, Wisconsin
10. Department of MedicineUniversity of Toronto, Division of Hematology, Mount Sinai HospitalToronto Canada