1. Department of Pathology, Brigham and Women's Hospital Harvard Medical School Boston Massachusetts USA
2. Department of Pathology and Laboratory Medicine Tufts Medical Center Boston Massachusetts USA
3. Transfusion Medicine Service Baystate Medical Center, Baystate Health Springfield Massachusetts USA
4. Department of Pathology and Laboratory Medicine Boston Medical Center and Boston University School of Medicine Boston Massachusetts USA
5. Department of Pathology, Beth Israel Deaconess Harvard Medical School Boston Massachusetts USA
6. Department of Pathology Massachusetts General Hospital, Harvard Medical School Boston Massachusetts USA