1. Department of Radiological Sciences, Oncology and Anatomo-Pathology, Sapienza, University of Rome, 00185 Rome, Italy
2. Institute of Crystallography CNR-IC, National Research Council of Italy, Monterotondo, 00015 Rome, Italy
3. Department of Medico-Surgical Sciences and Biotechnologies, Research Center for Biophotonics, Sapienza University of Rome, 04100 Latina, Italy