1. Department of Laboratory Medicine Yale School of Medicine New Haven Connecticut USA
2. Department of Pathology, Division of Transfusion Medicine and Hemostasis University of Texas Southwestern Dallas Texas USA
3. Department of Pathology City of Hope National Medical Center Irvine California USA
4. Department of Pathology Baylor Scott & White Medical Center Temple Texas USA
5. Department of Pathology, Microbiology & Immunology Vanderbilt University Medical Center Nashville Tennessee USA