[1] Amgen Res Munich GmbH, Munich, Germany
[2] Univ Klinikum Wurzburg, Med Klin & Poliklin 2, Wurzburg, Germany
[3] Univ Klinikum Wurzburg, Comprehens Canc Ctr Mainfranken, Wurzburg, Germany
[4] Amgen Inc, Thousand Oaks, CA 91320 USA
[5] Univ Ulm, Dept Med 3, D-89069 Ulm, Germany
[6] City Hosp, Dept Med 2, Kiel, Germany
[7] Univ Hosp Schleswig Holstein, Kiel, Germany
[8] Univ Munster, Bone Marrow Transplantat Ctr, D-48149 Munster, Germany
[9] Metronomia GmbH, Munich, Germany
[10] Goethe Univ Frankfurt, Ctr Internal Med, Frankfurt, Germany