1. Bloodworks Northwest & Department of Laboratory Medicine & Pediatrics; University of Washington; Seattle Washington
2. Clinical Immunology and Transfusion Medicine, Karolinska University Hospital and Laboratory Medicine; Karolinska Institutet; Stockholm Sweden
3. Sanquin - Leiden University Medical Centre, Center for Clinical Transfusion Research; Leiden the Netherlands
4. University of Pittsburgh School of Medicine and the Institute for Transfusion Medicine; Pittsburgh Pennsylvania
5. NHS Blood and Transplant, Oxford University Hospitals and National Institute for Health Research (NIHR) Oxford Biomedical Research Centre
6. Oxford University Hospitals; Oxford UK
7. McMaster University; Hamilton Ontario Canada
8. Division of Transfusion Medicine, Department of Pathology; Brigham and Women's Hospital; Boston Massachusetts
9. Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine; David Geffen School of Medicine at UCLA; Los Angeles California
10. Department of Pathology and Laboratory Medicine; University of Vermont Medical Center; Burlington Vermont
11. Department of Maternal Fetal Medicine; Baylor College of Medicine; Houston Texas
12. Department of Pathology and Department of Medicine; Dartmouth-Hitchcock Medical Center; Lebanon New Hampshire
13. Regional Blood Transfusion Service; Swiss Red Cross; Basel Switzerland
14. Department of Pathology and Laboratory Medicine; Emory University School of Medicine
15. Department of Hematology; The Royal Children's Hospital; Melbourne Australia
16. Departments of Medicine and Laboratory Medicine & Pathology; University of Ottawa, University of Ottawa Centre for Transfusion Research, Ottawa Hospital Research Institute; Ottawa Ontario Canada