1. Institute of Transfusion Medicine, University of Ulm, and Institute for Clinical Transfusion Medicine and Immunogenetics German Red Cross Blood Transfusion Service Baden‐Württemberg‐Hessen and University Hospital Ulm Ulm Germany
2. Hôpital Saint Louis Paris France
3. Department of Hematology, Seoul St. Mary's Hospital, College of Medicine The Catholic University of Korea Seoul Republic of Korea
4. Pavlov First Saint Petersburg State Medical University St. Petersburg Russia
5. St. James's University Hospital Leeds UK
6. Alexion, AstraZeneca Rare Disease Boston Massachusetts USA