1. Department of Pathology and Laboratory Medicine University of Arkansas for Medical Sciences Little Rock Arkansas USA
2. American Red Cross Columbus Ohio USA
3. Department of Pathology Nationwide Children's Hospital Columbus Ohio USA
4. Department of Pathology Virginia Commonwealth University Richmond Virginia USA
5. Department of Hematology/Oncology and Bone Marrow Transplant University of Washington Seattle Washington USA
6. Department of Pediatrics and Pathology George Washington School of Medicine and Health Sciences Washington District of Columbia USA
7. Department of Pathology University of New Mexico Albuquerque New Mexico USA
8. Department of Pathology and Laboratory Medicine University of North Carolina Chapel Hill North Carolina USA