1. Thomas E.Starzl Transplantation Institute; University of Pittsburgh; Medical Center; Pittsburgh PA
2. Immunology & Histocompatibility Testing Laboratories; Hospital of the University of Pennsylvania; Philadelphia PA
3. HLA Laboratory; Children's Hospital Los Angeles; Los Angeles CA
4. Division of Transplantation; University of Cincinnati; Cincinnati OH
5. HLA Laboratory; Emory University Hospital; Atlanta GA
6. Department of Immunohematology and Transfusion; Leiden University Medical Center; Leiden the Netherlands
7. MLC Group LLC; Phoenix AZ
8. Comprehensive Transplant Center; Northwestern University; Feinberg School of Medicine; Chicago IL
9. Transplant Immunology Laboratory; Oxford Transplant Centre; Oxford University Hospitals; Oxford United Kingdom
10. Biomedical Laboratory Diagnostics Program; Michigan State University; East Lansing MI
11. Digestive Disease Institute; Cleveland Clinic Main Campus; Cleveland OH
12. Department of Transplant Immunology; Royal Liverpool and Broadgreen University Hospital; Liverpool United Kingdom
13. Department of Renal Transplantation; University of Manitoba; Winnipeg Canada
14. Transplant Immunology Laboratory; Comprehensive Transplant Center; Feinberg School of Medicine; Northwestern University; Chicago IL
15. Addenbrooke's Hospital; Cambridge University; Cambridge United Kingdom
16. Division of Nephrology; University Health Network Regional HLA Laboratory; Toronto General Hospital; Toronto ON Canada
17. Division of Transplant Pathology; Thomas E. Starzl Transplantation Institute; University of Pittsburgh Medical Center; Pittsburgh PA