1. Department of Internal Medicine V, University Hospital Heidelberg, Heidelberg, Germany
2. Division of Biostatistics, German Cancer Research Center, Heidelberg, Germany
3. Campus Benjamin Franklin, Charité, Interdisziplinäre Klinik und Poliklinik für Stammzelltransplantation, Berlin, Germany
4. Department of Internal Medicine I, University Hospital Carl Gustav Carus Dresden, Technical University Dresden, Dresden, Germany