1. Vitalant Research Institute (Formerly Blood Systems Research Institute) San Francisco California
2. Department of Laboratory MedicineUniversity of California San Francisco California
3. Pittsburgh Heart, Lung, Blood and Vascular Medicine InstituteUniversity of Pittsburgh Pittsburgh Pennsylvania
4. Division of Pulmonary, Allergy and Critical Care Medicine, Department of MedicineUniversity of Pittsburgh Pittsburgh Pennsylvania
5. RTI International Atlanta Georgia
6. RTI International Rockville Maryland
7. Blood Research and Medical Sciences Institutes, Blood Center of Wisconsin Milwaukee Wisconsin
8. Bloodworks NW Research Institute; and the Department of Laboratory Medicine and the Department of Medicine, Division of HematologyUniversity of Washington School of Medicine Seattle Washington
9. Department of Pathology and Laboratory MedicineUniversity of Wisconsin‐Madison Madison Wisconsin
10. Clinical Pathology, University of British Columbia, School of Medicine Vancouver British Columbia Canada