1. Klinik I für Innere Medizin, Universität zu Köln, Köln, Germany;
2. Georgetown University Hospital, Lombardi Cancer Center, Washington, DC;
3. Institute of Cancer Research, London, United Kingdom;
4. Universita Vita-Salute Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele, Milano, Italy;
5. Institute Pasteur, Montevideo, Uruguay;
6. University of Ulm, Ulm, Germany;
7. St James's Institute of Oncology, Leeds, United Kingdom;
8. Department of Leukemia, University of Texas M. D. Anderson Cancer Center, Houston;
9. Hospital Clinic, IDIBAPS, Barcelona, Spain;
10. Division of Hematology/Oncology, Long Island Jewish Medical Center, New Hyde Park, NY; and
11. Rebecca and John Moores Cancer Center, University of California–San Diego, La Jolla