[1] Univ Hosp Wurzburg, Dept Hematol & Oncol, Wurzburg, Germany
[2] Micromet AG, Munich, Germany
[3] Goethe Univ Frankfurt, Dept Med 2, Frankfurt, Germany
[4] Univ Hosp Schleswig Holstein Kiel, Poliklin, Kiel, Germany
[5] Univ Hosp Ulm, Ulm, Germany
[6] Univ Munster, Dept Hematol Oncol, Munster, Germany
[7] Charite Ctr 14, Berlin, Germany
[8] Univ Munich, Inst Immunol, D-8000 Munich, Germany