1. Red Cross Blood Service of Baden‐Württemberg–Hessen, Institute Baden‐BadenBaden‐Baden Germany
2. Institute of Transfusion Medicine and Immunology, Heidelberg University, Medical Faculty Mannheim, German Red Cross Blood Service Baden‐Württemberg–HessenMannheim Germany
3. Klinikum StuttgartInstitute of Transfusion Medicine
4. Olgahospital, Klinikum StuttgartStuttgart Germany
5. New York Blood CenterNew York New York