1. Department of Haemotherapy and Haemostasis; Hospital Clínic; IDIBAPS; UB; Barcelona Spain
2. Clinical Center; Department of Transfusion Medicine; National Institutes of Health; Bethesda MD USA
3. UCLA Division of Transfusion Medicine; David Geffen School of Medicine at UCLA; Los Angeles CA USA
4. Department of Pathology; Beth Israel Deaconess Medical Centre; Boston MA USA
5. Oxford University Hospitals and NHS Blood & Transplant; Oxford UK
6. Hospital Sirio Libanes Blood Bank; São Paulo Brazil
7. Department of Blood Transfusion; Hospital Universitario Puerta de Hierro; Majadahonda Spain
8. Department of Haematology; Hospital Verge de la Cinta; Tortosa Spain
9. Department of Clinical Science; Haukeland University Hospital; University of Bergen; Bergen Norway
10. Puget Sound Blood Center; Department of Laboratory Medicine; University of Washington; Seattle WA USA
11. Department of Pathology; Institute for Transfusion Medicine; University of Pittsburgh; Pittsburgh PA USA