1. Oncology Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
2. Medical Oncology Unit, Department of Specialized, Experimental and Diagnostic Medicine (DIMES), Alma Mater Studiorum-University of Bologna, 40126 Bologna, Italy
3. Radiation Oncology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
4. Radiation Oncology, Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum-University of Bologna, Via Albertoni 15, 40138 Bologna, Italy
5. IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, 47014 Meldola, Italy