1. Serviço de Hematologia; Instituto Português de Oncologia de Lisboa, Francisco Gentil; Lisbon Portugal
2. Alexion Pharma International; New Haven Connecticut USA
3. Alexion Pharma International; Lexington Massachusetts USA
4. Radboudumc; Nijmegen The Netherlands
5. Institute of Clinical Transfusion Medicine and Immunogenetics; German Red Cross Blood Transfusion Service Baden-Württemberg-Hessen; Hessen Germany
6. University Hospital Ulm; Ulm Germany
7. Institute of Transfusion Medicine; University of Ulm; Ulm Germany
8. Royal Melbourne Hospital; Melbourne Victoria Australia
9. University of Melbourne; Melbourne Victoria Australia
10. Duke University Medical Center; Durham North Carolina USA