1. Department of Radiation Oncology, ‘Maggiore della Carità’ University Hospital, 28100 Novara, Italy
2. Department of Medical Oncology, ‘Maggiore della Carità’ University Hospital, 28100 Novara, Italy
3. Department of Translational Sciences (DIMET), University of Eastern Piedmont, 28100 Novara, Italy
4. Department of Radiology, ‘Maggiore della Carità’ University Hospital, 28100 Novara, Italy
5. Department of Radiation Oncology, Veneto Institute of Oncology IOV-IRCCS, 35100 Padua, Italy
6. Department of Surgery, Oncology and Gastroenterology, University of Padova, 35100 Padua, Italy