1. Department of Hematology and Oncology, Internal Medicine III, University Medical Center, Regensburg, Germany;
2. Institute of Functional Genomics, University of Regensburg, Regensburg, Germany;
3. Institute of Clinical Microbiology and Hygiene and
4. Department of Orthopedic Surgery, University Medical Center, Regensburg, Germany; and
5. Statistical Bioinformatics, Institute of Functional Genomics, University of Regensburg, Regensburg, Germany