1. Department of Pathology and Laboratory Medicinethe Dartmouth‐Hitchcock Medical CenterLebanon New Hampshire
2. Department of Medicineand the Dartmouth‐Hitchcock Medical CenterLebanon New Hampshire
3. Department of SurgeryDartmouth‐Hitchcock Medical CenterLebanon New Hampshire
4. The Institute for Transfusion Medicine
5. Department of Pathologyand the University of Pittsburgh Medical CenterPittsburgh Pennsylvania
6. Department of SurgeryUniversity of Pittsburgh Medical CenterPittsburgh Pennsylvania