1. Department of Pathology and Laboratory Medicine, Tufts Medical Center, Boston, MA;
2. Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD;
3. Department of Pathology, Massachusetts General Hospital, Boston, MA;
4. Department of Pathology, Wexner Medical Center, The Ohio State University, Columbus, OH;
5. Division of Hematology/Oncology, Johns Hopkins University School of Medicine, Baltimore, MD;
6. Institute for Clinical Research and Health Policy Studies and the Biostatistics, Epidemiology, and Research Design Center, Tufts Medical Center, Boston, MA;
7. Centre for Lymphoid Cancer, British Columbia Cancer Agency, Vancouver, BC, Canada;
8. Hackensack University Medical Center, Hackensack, NJ;
9. Hematology/Oncology, Massachusetts General Hospital Cancer Center, Boston, MA;
10. Roswell Park Cancer Institute, Buffalo, NY;
11. Division of Hematology/Oncology, University of Miami School of Medicine, Miami, FL;
12. Fred Hutchinson Cancer Research Center, Seattle, WA;
13. Division of Hematology/Oncology, Medical College of Wisconsin, Milwaukee, WI;
14. Division of Hematology/Oncology, University of Rochester, Rochester, NY;
15. University of Nebraska Medical Center, Omaha, NE;
16. Division of Hematology, The Ohio State University, Columbus, OH;
17. Cleveland Clinic, Cleveland, OH;
18. Department of Pathology, University of Massachusetts Medical School, Worcester, MA; and
19. Division of Hematology/Oncology, Tufts Medical Center, Boston, MA