[1] Univ Hosp Frankfurt, Dept Med 2, Hematol Oncol, Frankfurt, Germany
[2] Univ Klinikum Giessen & Marburg, Dept Hematol Oncol & Immunol, Marburg, Germany
[3] Johannes Gutenberg Univ Mainz, Univ Med Ctr, Dept Med Hematol Oncol & Pneumol 3, D-55122 Mainz, Germany
[4] Univ Hosp Hamburg Eppendorf, Dept Stem Cell Transplantat, Hamburg, Germany
[5] Univ Giessen & Marburg, Med Ctr, Univ Marburg, Dept Hematol,Oncol,Immunol, Marburg, Germany
[6] Goethe Univ Frankfurt, Univ Hosp Frankfurt, Hosp Children & Adolescents, Div Stem Cell Transplantat & Immunol, D-60054 Frankfurt, Germany
[7] Goethe Univ Hosp Frankfurt, Dept Med 2, Hematol Oncol, Frankfurt, Germany
[8] Cardiff Univ, Dept Haematol, Cardiff CF10 3AX, S Glam, Wales