Leukemia, Lymphocytic, Chronic, B-Cell

• Blood and Marrow Transplant Group of Georgia — Atlanta, Georgia, United States
• Greenebaum Cancer Center at University of Maryland Medical Center — Baltimore, Maryland, United States
• Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins — Baltimore, Maryland, United States
• M.D. Anderson Cancer Center at University of Texas — Houston, Texas, United States

• New York Presbyterian Hospital - Cornell Campus — New York, United States
• Fox Chase Cancer Center — Philadelphia, Pennsylvania, United States
• Massey Cancer Center — Richmond, Virginia, United States

• Klaipeda Seamen's Hospital — Klaipėda, Klaipėda County, Lithuania
• Vilnius University Hospital Santariskiu Clinics — Vilnius, Vilnius County, Lithuania

• Long Island Jewish Medical Center — New Hyde Park, New York, United States
• MD Anderson Cancer Center — Houston, Texas, United States
• San Antonio Cancer Institute — San Antonio, Texas, United States

Not specified

• Pacific Coast Hematology/Oncology Medical Group, Inc. — Fountain Valley, California, United States
• UCSD School of Medicine — La Jolla, California, United States
• Rush-Presbyterian St. Luke's Cancer Center — Chicago, Illinois, United States
• Weill Medical College of Cornell University/New York Presbyterian Hospital — New York, United States

• University of Texas M.D. Anderson Cancer Center — Houston, Texas, United States

• University of Texas M.D. Anderson Cancer Center — Houston, Texas, United States

• USC Norris Cancer Hospital — Los Angeles, California, United States
• Scripps Cancer Center — San Diego, California, United States
• Northwestern University — Chicago, Illinois, United States
• The Mayo Clinic — Rochester, Minnesota, United States

• National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) — Bethesda, Maryland, United States