1. Cedars‐Sinai Medical Center Smidt Heart Institute Los Angeles CaliforniaUSA
2. Transplant Immunology Laboratory Scott & White Medical Center Temple TexasUSA
3. Research Department United Network for Organ Sharing Richmond VirginiaUSA
4. HLA Laboratory Emory University Medical Center Atlanta GeorgiaUSA
5. HLA Laboratory Southwest Immunodiagnostics San Antonio TexasUSA
6. Department of Pathology Tulane University School of Medicine New Orleans LouisianaUSA
7. Comprehensive Transplant Center Cedars‐Sinai Medical Center Los Angeles CaliforniaUSA
8. National Marrow Donor Program Minneapolis MinnesotaUSA