1. Department of Hematology and Medical Oncology; University Medical Center Göttingen; Göttingen Germany
2. Praxis für Hämatologie und Onkologie; Lüdenscheid Germany
3. Department of Medical Statistics; University Medical Center Göttingen; Göttingen Germany
4. 1st Medical Department with Hematology, Stem Cell Transplantation, Hemostasis and Medical Oncology; Elisabethinen Hospital; Linz Austria
5. Red Cross Blood Transfusion Service of Upper Austria; Austrian Cluster for Tissue Regeneration; Linz Austria
6. Department of Nephrology and Rheumatology; University Medical Center Göttingen; Göttingen Germany
7. Department of Transfusion Medicine; University Medical Center Göttingen; Göttingen Germany