German Red Cross Blood Donor Service Baden-Wuerttemberg-Hessen, Frankfurt, Germany; Department of Thoracic and Cardiovascular Surgery, Johann Wolfgang Goethe University, Frankfurt, Germany; Department of Haemostaseology and Transfusion Medicine, Kerckhoff-Klinik, Bad Nauheim, Germany; University Clinic Munich, Department for Transfusion Medicine, Cell Therapy and Hemostaseology, Munich, Germany Cerus Corporation, Concord, United States