[1] Univ Dusseldorf, Univ Hosp, D-40225 Dusseldorf, Germany
[2] Univ Dusseldorf, Dept Hematol Oncol & Clin Immunol, D-40225 Dusseldorf, Germany
[3] Univ Med Ctr Hamburg Eppendorf, Clin Stem Cell Transplantat, Hamburg, Germany
[4] Univ Klinikum Carl Gustav Carus, Med Klin & Poliklin 1, Dresden, Germany
[5] Goethe Univ Frankfurt, Med Klin 2, Frankfurt, Germany
[6] Univ Hosp Berlin, Charite, Dept Hematol & Oncol, Berlin, Germany
[7] Univ Heidelberg, Heidelberg, Germany
[8] Univ Med Ctr Hamburg Eppendorf, Ctr Oncol, Bone Marrow Transplantat Unit, Hamburg, Germany