Leukemia, Lymphoid

• Hospital Germans Trias i Pujol — Badalona, Barcelona, Spain
• Hospital Durán I Reynals — L'Hospitalet de Llobregat, Barcelona, Spain
• Hospital Parc Taulí — Sabadell, Barcelona, Spain
• C.H. Universitario A Coruña — A Coruña, La Coruña, Spain

• Maisonneuve-Rosemont Hospital — Montreal, Quebec, Canada
• Charite - Universitaetsmedizin Berlin - Campus Benjamin Franklin — Berlin, Germany
• Universitaetsklinikum Essen — Essen, Germany
• Universitaetsklinikum Goettingen — Göttingen, Germany

• USC/Norris Comprehensive Cancer Center and Hospital — Los Angeles, California, United States
• Warren Grant Magnuson Clinical Center - NCI Clinical Trials Referral Office — Bethesda, Maryland, United States
• M. D. Anderson Cancer Center at University of Texas — Houston, Texas, United States
• Joe Arrington Cancer Research and Treatment Center — Lubbock, Texas, United States

• Johns Hopkins University — Baltimore, Maryland, United States

• Podkarpacki Oncology Centre — Brzozów, Poland
• Voivodeship Hospital, Oncology Ward — Elblag, Poland
• Academic Clinical Centre, Hospital of Medical Academy, Clinic of Haematology and Transplantology — Gdansk, Poland
• Silesian Medical University, Chair and Clinic of Haematology and Bone Marrow Transplantation — Katowice, Poland

• Lineberger Comprehensive Cancer Center at University of North Carolina - Chapel Hill — Chapel Hill, North Carolina, United States

• Massachusetts General Hospital — Boston, Massachusetts, United States
• Brigham and Women's Hospital — Boston, Massachusetts, United States
• Dana-Farber Cancer Institute — Boston, Massachusetts, United States

• Roswell Park Cancer Institute — Buffalo, New York, United States

Not specified

• Ohio State University Medical Center — Columbus, Ohio, United States