1. Division of Radiation Oncology, European Institute of Oncology IRCCS, Milan, Italy;
2. Radiation Oncology Clinical Department, National Center of Oncological Hadrontherapy, Pavia, Italy;
3. Department of Experimental Oncology, European Institute of Oncology IRCCS, Milan, Italy;
4. Department of Oncology, Radiation Oncology, University of Torino, Turin, Italy;
5. Department of Translational Medicine, Novara, University of Piemonte Orientale, Vercelli, Italy;
6. Unit of Radiation Oncology, ICS Maugeri, IRCSS, Pavia, Italy;
7. Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy;
8. Unit of Medical Physics, European Institute of Oncology, Milan, Italy;
9. Department of Head and Neck Surgery and Otorhinolaryngology, IEO, European Institute of Oncology IRCCS, Milan, Italy;
10. Department of Medical Oncology, European Institute of Oncology, Milan, Italy;
11. Scientific Direction, European Institute of Oncology IRCCS, Milan, Italy;
12. Scientific Direction, National Center of Oncological Hadrontherapy, Pavia, Italy