1. Saint Petersburg State University, 7/9 Universitetskaya nab., Saint Petersburg 199034, Russia
2. National Technology Initiative Center of Excellence in Advanced Manufacturing Technologies at Peter the Great St. Petersburg Polytechnic University, Politekhnicheskaya 29/1 str., Saint Petersburg 195251, Russia
3. Institute of Cytology of the Russian Academy of Sciences (RAS), Tikhoretsky ave. 4, Saint Petersburg 194064, Russia
4. First Pavlov State Medical University of St. Petersburg, Lva Tolstogo str. 6-8, Saint Petersburg 197022, Russia
5. Department of Radiation Oncology, Klinikum rechts der Isar, Technische Universität München, Ismaniger Str. 22, 81675 Munich, Germany