[1] Univ Hosp Eppendorf, Dept Hematol & Oncol, Hamburg, Germany
[2] Hannover Med Sch, Dept Hematol Hemostasis Oncol & Stem Cell Transpl, Hannover, Germany
[3] Univ Hosp Frankfurt, Frankfurt, Germany
[4] Univ Med Ctr Hamburg Eppendorf, Ctr Oncol, Med Clin & Polyclin 2, Hamburg, Germany
[5] GSOmbH, Hamburg, Germany
[6] GSO Global B V, Amsterdam, Netherlands