1. Institute of Molecular Cell Biology, Center for Molecular Biomedicine, University Hospital, 07745 Jena, Germany
2. Laboratory of Radiobiology & Experimental Radiooncology, Department of Radiotherapy and Radiooncology, Center of Oncology, University Medical Center Hamburg-Eppendorf, Germany, 20246 Hamburg, Germany
3. Leibniz Institute on Aging - Fritz Lipmann Institute, 07745 Jena, Germany
4. Faculty of Biochemistry and Molecular Medicine, University of Oulu, 90014 Oulu, Finland