1. National Center of Oncological Hadrontherapy (Fondazione CNAO), Pavia, Italy
2. Department of Radiation Oncology, IRCCS Policlinico San Matteo Foundation and University of Pavia, Pavia, Italy
3. Lincoln International Business School, University of Lincoln, UK
4. General Surgery Clinic, IRCCS Policlinico San Matteo Foundation, and Department of Diagnostic and Pediatric Science, University of Pavia, Pavia, Italy
5. Department of Radiation Oncology, IRCCS Ospedale Policlinico San Martino, and Department of Health Science, University of Genoa, Genoa, Italy
6. Department of Surgery and Cancer, Imperial College London, London, UK