1 Department of Oncology, Haematology, BMT with Section Pneumology, Hubertus Wald Tumorzentrum, University Cancer Center Hamburg, University Medical Center Eppendorf, Hamburg, Germany.
2 Department of Oncology, Haematology, BMT with Section Pneumology, Hubertus Wald Tumorzentrum, University Cancer Center Hamburg, University Medical Center Eppendorf, Hamburg, Germany. Electronic address: c.bokemeyer@uke.uni-hamburg.de.