1. Radiotherapy and Radiosurgery Department, Humanitas Clinical and Research Hospital-IRCCS, Rozzano (MI), Italy
2. Advanced Radiotherapy Center, UPMC San Pietro FBF, Roma, Italy
3. Radiotherapy Unit, Istituto Neurologico Fondazione "Carlo Besta", Milan, Italy
4. Radiation Therapy Unit, Department of Oncology and Advanced Technology, Azienda Ospedaliera Arcispedale S Maria Nuova, Reggio Emilia, Italy
5. Radiation Oncology Unit, Azienda Ospedaliera Universitaria Careggi, Florence, Italy
6. UOC Radiation Oncology, Istituto Nazionale per lo Studio e la Cura dei Tumori - Fondazione "Giovanni Pascale", Milan, Italy
7. Radiotherapy Oncology Centre, "S. Maria" Hospital, Terni, Italy
8. Department of Radiotherapy, IEO European Institute of Oncology, IRCCS, Milan, Italy
9. Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy
10. Radiation Oncology, Sacro Cuore Don Calabria Hospital, Negrar-Verona, Italy
11. SC Radioterapia Oncologica, Perugia, Italy
12. Radiation Therapy unit, Policlinico Universitario Tor Vergata, Roma, Italy
13. Department of Radiation Oncology, University and Spedali Civili Hospital, Brescia, Italy
14. Radiation Therapy unit, Modena, Italy
15. Radiation Therapy unit, CDI, Milano, Italy
16. Radiotherapy Department, Arezzo, Valdarno, Italy
17. Radiation Therapy unit, IOV, Padova, Italy
18. Department of Radiation Oncology, Azienda Ospedaliera Universitaria Pisana, University of Pisa, Pisa, Italy
19. Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy