1 Department of Hematology and Oncology, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany.
2 Hematopoietic Cell Transplant and Cellular Therapy Program, Massachusetts General Hospital Cancer Center, Boston, MA, USA.
3 Division of Biostatistics, German Cancer Research Center, Heidelberg, Germany.
4 Department of Hematology and Oncology, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120, Heidelberg, Germany. Thomas.Luft@med.uni-heidelberg.de.