1. BloodCenter of Wisconsin (BCW); Milwaukee Wisconsin
2. Blood Systems Research Institute, University of California San Francisco; San Francisco California
3. RTI International; Rockville Maryland
4. RTI International, Research Triangle; North Carolina
5. Department of Medical Epidemiology and Biostatistics; Karolinska Institutet; Stockholm Sweden
6. Hematology Center; Karolinska University Hospital; Stockholm Sweden
7. Department of Laboratory Medicine; Yale University School of Medicine; New Haven Connecticut
8. Department of Anesthesiology and Perioperative Medicine; Mayo Clinic; Rochester Minnesota
9. The Institute for Transfusion Medicine (ITXM) and University of Pittsburgh; Pittsburgh Pennsylvania