1. Department of Pathology and Cell Biology, Columbia University Medical Center; New York New York
2. Division of Transfusion Medicine, Mayo Clinic; Rochester Minnesota
3. BloodCenter of Wisconsin; Milwaukee Wisconsin
4. Division of Nephrology, University of Virginia; Charlottesville Virginia
5. Puget Sound Blood Center; Seattle Washington
6. Department of Medicine, Seattle Cancer Care Alliance; Seattle Washington
7. Department of Pathology and Medicine, Dartmouth-Hitchcock Medical Center; Lebanon New Hampshire
8. Department of Medicine, Beth Israel Deaconess Medical Center; Boston Massachusetts
9. Department of Laboratory Medicine, Yale University School of Medicine; New Haven Connecticut
10. New York Blood Center; New York New York
11. Department of Pathology and Laboratory Medicine, Emory University School of Medicine; Atlanta Georgia