Statistical Bioinformatics Department, Institute of Functional Genomics, University of Regensburg, 93053 Regensburg and.|Department of Haematology and Oncology, University Medical Centre of the Georg-August University of Göttingen, 37073 Göttingen.|Department of Haematology and Oncology, University Medical Centre of the Georg-August University of Göttingen, 37073 Göttingen.|Statistical Bioinformatics Department, Institute of Functional Genomics, University of Regensburg, 93053 Regensburg and.