1. Medizinische Klinik II, Johann Wolfgang Goethe Universität, Frankfurt, Germany;
2. Hospital Saint Louis, Paris Cedex, France;
3. Istituto di Ematologica E Oncologica Medica, Policlinico S Orsola, Bologna, Italy;
4. Department of Hematology, University Hospital, Uppsala, Sweden;
5. Clinical Research Centre, Centre Hospitalier Universitaire la Milétrie, Poitiers, France;
6. University of Chicago, IL;
7. Dipartimento di Medicina Interna ii ed Ematologia, Azienda Ospedaliera S. Luigi, Orbassano, Italy;
8. Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA;
9. Medizinische Fakultät Mannheim, Universität Heidelberg, Mannheim, Germany;
10. Bristol-Myers Squibb, Hopewell, NJ;
11. Bristol-Myers Squibb, Wallingford, CT; and
12. Stanford University School of Medicine, CA