1. Johns Hopkins School of Medicine; Baltimore MD USA
2. University of California; San Francisco CA USA
3. Blood Systems Research Institute; San Francisco CA USA
4. RTI International; Rockville MD USA
5. Blood Center of Wisconsin; Milwaukee WI USA
6. Department of Pathology; Medical College of Wisconsin; Milwaukee WI USA
7. Yale University; New Haven CT USA
8. Bloodworks Northwest; Seattle WA USA
9. Institute of Transfusion Medicine; Pittsburgh PA USA