1. Division of Hematology/Oncology; Hospital of the University of Pennsylvania; Philadelphia Pennsylvania
2. Robert H. Lurie Comprehensive Cancer Center; Northwestern University; Chicago Illinois
3. Center for Lymphoma; Massachusetts General Hospital Cancer Center; Boston Massachusetts
4. Department of Pathology; Massachusetts General Hospital and Harvard Medical School; Boston Massachusetts
5. Clinical Research Division; Fred Hutchinson Cancer Research Center; Seattle Washington
6. Department of Malignant Hematology; H. Lee Moffitt Cancer Center; Tampa Florida
7. Leukemia/BMT Program of British Columbia; British Columbia Cancer Agency; Vancouver British Columbia Canada
8. Department of Medicine; Memorial Sloan Kettering Cancer Center; New York New York
9. Virginia Cancer Specialists; Fairfax Virginia
10. Division of Hematology and Oncology; Medical College of Wisconsin; Milwaukee Wisconsin
11. Department of Pathology; The University of Texas MD Anderson Cancer Center; Houston Texas
12. Department of Pathology and Laboratory Medicine; University of Wisconsin; Madison Wisconsin
13. Section of Hematology and Oncology, Department of Medicine; University of Chicago; Chicago Illinois