1. Department of Radiotherapy, Institute of Oncology Ljubljana, Ljubljana, Slovenia
2. Institute of Pathology, Faculty of Medicine, University of Ljubljana, Slovenia
3. Faculty of Medicine, University of Maribor, Slovenia
4. Department of Molecular Genetics, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
5. Department of Mathematics and Computer Science, Faculty of Natural Sciences and Mathematics, University of Maribor, Slovenia