1. Department of Pathology and Laboratory Medicine Dartmouth‐Hitchcock Medical Center Lebanon New Hampshire USA
2. Division Pathology & Laboratory Medicine, Children's National Hospital and Department of Pathology and Pediatrics The George Washington University Washington District of Columbia USA
3. NHS Blood & Transplant, and Oxford Biomedical Research Centre Oxford UK
4. Department of Laboratory Medicine and Pathology University of Washington Seattle Washington USA
5. Bloodworks Northwest Seattle Washington USA
6. Department of Pathology University of Pittsburgh Pittsburgh Pennsylvania USA
7. Vitalant Pittsburgh Pennsylvania USA
8. Department of Pathology Brigham and Women's Hospital Boston Massachusetts USA