1. University of Belgrade, Institute of Molecular Genetics and Genetic Engineering, Belgrade, Serbia;
2. Helmholtz Zentrum München, German Research Center for Environmental Health, Institute of Radiation Biology, Neuherberg, Germany;
3. Chair of Radiation Biology, Technical University of Munich, Munich, Germany
4. University of Belgrade, Faculty of Biology, Belgrade, Serbia;
5. Serbian Academy of Sciences and Arts, Belgrade, Serbia;