[1] Univ Dusseldorf, Fac Med, Dusseldorf, Germany
[2] Univ Klin Dusseldorf, Klin Hamatol Onkol & Klin Immunol, Dusseldorf, Germany
[3] Univ Hosp, Dept Med 2, Frankfurt, Germany
[4] Univ Munster, Dept Med Hematol & Oncol A, D-48149 Munster, Germany
[5] Univ Med Mannheim, Med Klin 3, Mannheim, Germany
[6] Univ Hosp Bonn, Med Klin 3, Bonn, Germany
[7] Karlsruhe Hosp, Dept Med 3, Karlsruhe, Germany
[8] Hannover Med Sch, Hannover, Germany
[9] Univ Hosp Carl Gustav Carus, Dresden, Germany
[10] Charite, Berlin, Germany
[11] Univ Heidelberg Hosp, Dept Med 5, Heidelberg, Germany
[12] Univ Hosp Hamburg Eppendorf, Hamburg, Germany
[13] Univ Hosp Essen, Clin Bone Marrow Transplants, Essen, Germany