[1] European Inst Oncol IRCCS, Div Radiat Oncol, I-20141 Milan, Italy
[2] Sapienza Univ Rome, St Andrea Hosp, Radiotherapy Oncol, Rome, Italy
[3] Fatebenefratelli San Pietro Hosp, Div Med Oncol, I-00189 Rome, Italy
[4] Fdn IRCCS Ist Nazl Tumori, Head & Neck Med Oncol Unit, Milan, Italy
[5] IRCCS Fdn G Pascale, Ist Nazl Tumori, Radiat Oncol Unit, Naples, Italy
[6] Fdn Muto Onlus, Naples, Italy
[7] Ctr Aktis Diagnost & Terapia, Naples, Italy
[8] Vita Salute S Rafaele Univ, Radiotherapy Dept, IRCCS San Raffaele Sci Inst, Milan, Italy
[9] Azienda Osped Univ Ruggi Aragona, Salerno, Italy
[10] Casa Cura Macchiarella, UO Radioterapia Oncol, I-90127 Palermo, Italy
[11] REM Radioterapia, Radiat Oncol Unit, Viagrande, Italy
[12] Humanitas Clin & Res Ctr IRCCS, Radiotherapy & Radiosurg Dept, Milan, Italy
[13] Humanitas Univ, Dept Biomed Sci, Milan, Italy
[14] FPO IRCCS, Candiolo Canc Inst, Radiotherapy Unit, Turin, Italy
[15] Azienda Osped Univ Policlin, Radiat Oncol Unit, Bari, Italy
[16] Osped Fatebenefratelli S Giovanni, UOC Radioterapia, I-00186 Rome, Italy
[17] Ctr Radiol Vega, Caserta, Italy
[18] AO Pugliese Ciaccio Catanzaro, UO Nephrol, Catanzaro, Italy
[19] Azienda Osped San GiuseMoscati AV, UOC Radiotherapy, Dept Onco Hematol Dis, I-83100 Avellino, Italy
[20] Univ Naples Federico II, Sch Med, Dept Adv Biomed Sci, Naples, Italy
[21] Radioterapia Emictr, Naples, Italy
[22] San Pio Hosp, Dept Radiat Oncol, Benevento, Italy
[23] Osped Vito Fazzi, Radiatherapy Unit, Lecce, Italy
[24] ASL Roma1, UOC Radioterapia, Rome, Italy
[25] Casa Cura Villa Salus, UO Oncol & Ematol, Messina, Italy
[26] Fdn IOM, Viagrande, Catania, Italy
[27] Univ Turin, Dept Oncol, Radiat Oncol, Turin, Italy