¹University of Florence, Department of Experimental and Clinical Biomedical Sciences "M. Serio", Florence, Italy; ²IEO European Institute of Oncology, IRCCS, Division of Radiotherapy, Milan, Italy; ³University of Milan, Department of Oncology and Hemato-oncology, Milan, Italy. IEO European Institute of Oncology, IRCCS, Division of Radiotherapy, Milan, Italy; ⁴Humanitas Research Hospital-IRCCS, Radiotherapy and Radiosurgery department , Rozzano, Milan, Italy; ⁵Humanitas Research Hospital-IRCCS, Radiotherapy and Radiosurgery department, Rozzano, Milan, Italy; ⁶Humanitas Research Hospital-IRCCS, Rozzano, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Pieve Emanuele , Milan, Italy; ⁷National Center for Oncological Hadrontherapy (CNAO), Radiotherapy Unit, Pavia, Italy; ⁸Istituto Fiorentino di Cura ed Assistenza, CyberKnife Center, Florence, Italy; ⁹Azienda Ospedaliero Universitaria Careggi, Radiation Oncology Unit - Oncology Department, Florence, Italy; ¹⁰University of Florence, Department of Experimental and Clinical Biomedical Sciences "M. Serio". Azienda Ospedaliero Universitaria Careggi, Radiation Oncology Unit - Oncology Department, Florence, Italy

(1)Università Cattolica del Sacro Cuore, Dipartimento di Diagnostica per Immagini- Radioterapia Oncologica e Ematologia, Rome, Italy;(2)Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A.Gemelli IRCCS - Dipartimento di Diagnostica per Immagini- Radioterapia Oncologica e Ematologia, Rome, Italy;(3)Fondazione Policlinico Universitario A.Gemelli IRCCS, Dipartimento di Diagnostica per immagini - Radioterapia Oncologica ed Ematologia, Rome, Italy;(4)Università Cattolica del Sacro Cuore, Fondazione Policlinico Universitario A.Gemelli IRCCS - Dipartimento di Chirurgia, Rome, Italy;

(1)University Umea Norrlands Universitetssjukhus, Radiation Sciences, Umea, Sweden;(2)University Umea Norrlands Universitetssjukhus, Medical Biosciences, Umea, Sweden;

¹Basavatarakam Indo American Cancer Hospital & Research Institute, Radiation Oncology, Hyderabad, India

(1)University Hospital of Northern Norway, Departmetn of Radiation Oncology, Tromsø, Norway;(2)University of Tromsø, Clinical Medicine, Tromsø, Norway;(3)University of Tromsø, Medical Biology, Tromsø, Norway;