1. Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
2. Gehr Leukemia Center; City of Hope; Duarte California
3. Department of Internal Medicine II, Hematology/Oncology, Comprehensive Cancer Center Mainfranken; University Hospital of Würzburg; Wurzburg Germany
4. Department of Medicine, Hematology, University Hospital “12 de Octubre”; Madrid Spain
5. Department of Medicine, Hematology/Oncology; University of Chicago; Chicago Illinois
6. Department of Medicine; University of Muenster; Muenster Germany
7. Department of Medicine II; University Hospital; Frankfurt Germany
8. Amgen Research Munich GmbH; Munich Germany
9. Amgen; Thousand Oaks California
10. Amgen South San Francisco; South San Francisco California
11. Medical Clinic and Polyclinic II; University Hospital of Würzburg; Wurzburg Germany