1. Division of Transfusion Medicine; Mayo Clinic; Rochester Minnesota
2. Division of Cardiovascular Diseases; Mayo Clinic; Rochester Minnesota
3. Department of Pathology; Veterans Affairs Medical Center; White River Junction Vermont
4. Medical Division, Puget Sound Blood Center; Seattle, Washington; Department of Laboratory Medicine, Yale University; New Haven Connecticut
5. Department of Laboratory Medicine; Yale University School of Medicine; New Haven Connecticut
6. Division of Clinical Pharmacology; University of Kansas Hospital; Kansas City Kansas