1. Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens (NTUA), Zografou, Athens, Greece;
2. Institute of Medical Radiation Biology, University of Duisburg-Essen Medical School, Essen, Germany;
3. Radiation Biology Department, German Aerospace Center (DLR), Institute of Aerospace Medicine, Linder Höhe, Köln, Germany;
4. Research Division, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia;
5. Sir Peter MacCallum Department of Oncology, The University of Melbourne, Melbourne, VIC, Australia;
6. Division of Radiation Oncology and Cancer Imaging, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia;
7. Medical Physics Laboratory, Medical School, University of Ioannina, Ioannina, Greece;
8. Laboratory of Health Physics, Radiobiology & Cytogenetics, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research “Demokritos”, Athens, Greece