1. Medical Department II, Unit for Hema-tological Diagnostics; University Hospital Schleswig-Holstein; Kiel Germany
2. CLIP-Childhood Leukaemia Investigation Prague, Department of Pediatric Hematology and Oncology, Second Faculty of Medicine; Charles University and University Hospital Motol; Prague Czech Republic
3. Department I of Internal Medicine, Center for Integrated Oncology (CIO) Köln-Bonn, Excellence Cluster for Cellular Stress Response and Aging-Associated Diseases (CECAD); Center for Molecular Medicine Cologne (CMMC), University of Cologne; Cologne Germany