1. Division of Hematology; Department of Medicine; Duke University School of Medicine; Durham NC USA
2. Pathology and Laboratory Medicine Service; Durham Veterans Affairs Medical Center; Durham NC USA
3. Division of Hematology; Department of Medicine; Brigham and Women's Hospital and Harvard Medical School; Boston MA USA
4. Pharmacology; Novo Nordisk A/S; Måløv Denmark
5. Department of Pathology; Duke University School of Medicine; Durham NC USA