1. Medical Oncology Unit, Medical Oncology Department, Umberto I Hospital, RAO, 96011 Siracusa, Italy
2. Medical Oncology Unit, IRCCS Sacro Cuore Don Calabria, Negrar di Valpolicella, 37024 Verona, Italy
3. Radiotherapy Unit, San Camillo Forlanini Hospital, 00152 Rome, Italy
4. Medical Oncology Unit, Santo Spirito Hospital, 65124 Pescara, Italy
5. Department of Biomedical Sciences, Humanitas University, IRCCS Humanitas Research Hospital and Humanitas Cancer Center, 20089 Milan, Italy