1. Division of Health Protection Technologies, Agenzia Nazionale per le Nuove Tecnologie, l'Energia e lo Sviluppo Economico Sostenibile (ENEA), Rome, Italy
2. Department of Ecological and Biological Sciences, Tuscia University, Viterbo, Italy
3. Department of Radiation Physics, Guglielmo Marconi University, Rome, Italy
4. Department of Sciences, University of Roma Tre, Rome, Italy
5. Department of Health Sciences, University of Genoa, Genoa, Italy
6. IRCCS AOU San Martino IST Genoa, Italy