1. Department for Hematopoietic Transplantations, Med III, University Hospital of Munich, Munich, Germany
2. Department for Pediatric Hematology and Oncology, University Hospital of Düsseldorf, Düsseldorf, Germany
3. Department for Hematology, Municipal Hospital Oldenburg, Oldenburg, Germany
4. Helmholtz Center, Clinical Cooperative Group Human Cell Transplantation (CCG-HCT), Munich, Germany
5. Department for Hematology, University Hospital Augsburg, Augsburg, Germany