1. Department of Hematology, Oncology, and Stem Cell Transplantation, Department of Medicine I; University Medical Center Freiburg; Freiburg Germany
2. Comprehensive Cancer Center Freiburg; University Medical Center Freiburg; Freiburg Germany
3. Early Clinical Trial Unit, Comprehensive Cancer Center Freiburg; University Medical Center Freiburg; Freiburg Germany
4. University Hospital Würzburg, Germany
5. Department of Hematology and Medical Oncology, Winship Cancer Institute; Emory University School of Medicine; Atlanta Georgia
6. Center for Multiple Myeloma, Massachusetts General Hospital Cancer Center; Harvard Medical School; Boston Massachusetts