1. Department of Radiological Sciences, Oncology and Anatomical Pathology, Division of Radiotherapy, Sapienza University of Rome, 00161 Rome, Italy
2. Department of Radiological Sciences, Oncology and Anatomical Pathology, Division of Nuclear Medicine, Sapienza University of Rome, 00161 Rome, Italy
3. Department of Radiological Sciences, Oncology and Anatomical Pathology, Division of Oncology, Sapienza University of Rome, 00161 Rome, Italy
4. Radiation Oncology Unit, Department of Medicine, Surgery and Neurosciences, University of Siena, 53100 Siena, Italy
5. Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy
6. IRCCS Neuromed, 86077 Pozzilli, Italy