1. Department of Haematology; University Hospital Essen, University of Duisburg-Essen; Essen Germany
2. Institute of Cell Biology (Cancer Research), Medical Faculty, University of Duisburg-Essen; Essen Germany
3. Institute of Human Genetics, Christian-Albrechts-University Kiel and University Hospital Schleswig-Holstein; Kiel Germany
4. Genome Informatics; Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen; Essen Germany
5. Laboratory for Molecular Biology and Tumor Cytogenetics; Department of Haematology and Oncology; Linz Austria
6. Division of Haematology and Haemostaseology, Department of Medicine I; Medical University of Vienna; Vienna Austria