1. Advanced Radiation Oncology Department, IRCCS Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Italy
2. Dipartimento di Radioterapia Oncologica, Università e ASST Spedali Civili di Brescia, Brescia, Italy
3. Radiotherapy Unit, Department of Oncology and Hematology, University Hospital of Modena, Modena, Italy
4. Radiation Therapy Unit, Department of Oncology and Advanced Technology, AUSL-IRCCS, Reggio, Emilia, Italy
5. Department of Radiation Oncology, SS.Antonio e Biagio e C.Arrigo Hospital Alessandria, Alessandria, Italy
6. Department of Radiotherapy and Radiosurgery, Humanitas Clinical and Research Center- IRCCS - Rozzano (MI), Milano, Italy
7. Radiation Therapy Unit, Department of Oncology, Careggi University Hospital, Firenze, Italy
8. Radiation oncology Department, IRCCS Ospedale Policlinico San Martino, Genova, Italy
9. University of Brescia, Italy