1. 1Lymphoma Service, Division of Hematologic Malignancies, Department of Medicine, and
2. 2Department of Biostatistics and Epidemiology, Memorial Sloan Kettering Cancer Center, New York, NY;
3. 3Alliance Statistics and Data Center, Mayo Clinic, Rochester, MN;
4. 4The Ohio State University Comprehensive Cancer Center, Clara D. Bloomfield Center for Leukemia Outcomes Research, Columbus, OH;
5. 5Leukemia Service, Division of Hematologic Malignancies, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
6. 6Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, New York, NY;
7. 7Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY;
8. 8Australasian Leukaemia and Lymphoma Group, Richmond, VIC, Australia;
9. 9Institute of Haematology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia;
10. 10Victorian Cancer Cytogenetics Service, St Vincent’s Hospital, Fitzroy, Melbourne, VIC, Australia;
11. 11Department of Medicine, St. Vincent's Hospital, University of Melbourne, VIC, Australia;
12. 12Department of Medicine and Comprehensive Cancer Center, University of Chicago, Chicago, IL;
13. 13Section of Hematology, Cliniques Universitaires St-Luc, Brussels, Belgium;
14. 14Department of Internal Medicine, Section on Hematology and Oncology, Wake Forest Baptist Comprehensive Cancer Center, Winston-Salem, NC; and
15. 15Leukemia Division, Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA