1 Department of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, MD, United States of America.
2 BloodCenter of Wisconsin, Milwaukee, WI, United States of America.
3 American Red Cross, Philadelphia, PA, United States of America.
4 Cedars Sinai Medical Center, Los Angeles, CA, United States of America.
5 Lifeshare Blood Centers, Shreveport, LA, United States of America.
6 German Red Cross Blood Service NSTOB, Springe, Germany.
7 Yale School of Medicine, New Haven CT, United States of America.
8 Héma-Québec, Québec, Canada.
9 German Red Cross Blood Service Baden-Württemberg - Hessen, Institute for Clinical Transfusion Medicine and Immunogenetics Ulm, and University of Ulm, Ulm Germany.
10 Institute for Transfusion Medicine, Pittsburgh, PA, United States of America.