1. Robert Tomsich Pathology & Laboratory Medicine InstituteCleveland Clinic Cleveland Ohio
2. Pathology and Laboratory MedicineChildrenʼs National Medical Center Washington DC
3. Department of Transfusion Medicine, NIH Clinical CenterNational Institutes of Health Bethesda Maryland
4. Department of PathologyJohns Hopkins University School of Medicine Baltimore Maryland
5. Pathology & Laboratory MedicineWhite River Junction VA Medical Center White River Junction Vermont
6. Centralized Transfusion ServiceUniversity of Pittsburgh Pittsburgh Pennsylvania
7. Wing‐Kwai and Alice Lee‐Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of MedicineUniversity of California Los Angeles Los Angeles California
8. Department of Pathology and Laboratory MedicineDartmouth Hitchcock Medical Center Lebanon New Hampshire