1. Department of Hematology, Oncology, Hemostaseology and Stem Cell Transplantation; Medical Faculty; RWTH Aachen University; Aachen Germany
2. Department of Internal Medicine I; University Hospital Carl Gustav Carus; Technische Universität Dresden; Dresden Germany
3. Department of Medicine A, Hematology and Oncology; University Hospital of Muenster; Muenster Germany
4. Department of Medicine, Hematology/Oncology; Goethe-University; Frankfurt Germany