[1] Vanderbilt Univ, Dept Med, Hematol & Stem Cell Transplantat Sect, Div Hematol Oncol,Med Ctr, Nashville, TN 37232 USA
[2] Univ Wurzburg, Dept Internal Med 2, Div Hematol & Oncol, Allogene Stem Cell Transplant Ctr, Wurzburg, Germany
[3] Univ London Imperial Coll Sci Technol & Med, Hammersmith Hosp Trust, Dept Haematol, London, England