1. Radiation Oncology Unit, Responsible Research Hospital, Largo A. Gemelli 1, Campobasso, Italy
2. Department of Radiation Oncology, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, Naples, Italy
3. Radiation Oncology, Department of Experimental Diagnostic and Specialty Medicine (DIMES), Alma Mater Studiorum-Bologna University, Bologna, Italy
4. Dipartimento di Diagnostica Per Immagini, Fondazione Policlinico Universitario “A. Gemelli” IRCCS, UOC di Radioterapia Oncologica, Radioterapia Oncologica ed Ematologia, Rome, Italy
5. Department of Radiotherapy, Humanitas Clinical and Research Center–IRCCS, Rozzano, Milan, Italy
6. Radiation Oncology Unit, Department of Biomedical, Dental Science and Morphological and Functional Images, University of Messina, Messina, Italy
7. UOC Radioterapia, Ospedale San Filippo Neri, ASL Roma 1, Rome, Italy
8. Radiotherapy Oncology Centre, “S. Maria” Hospital, Terni, Italy
9. Università Cattolica del Sacro Cuore, Istituto di Radiologia, Milan, Italy
10. Radiation Oncology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
11. University of Perugia-Faculty of Medicine and Surgery Radiotherapy Oncology Centre-“S. Maria” Hospital, Terni, Italy