Authors: Giovanni Carlo Mazzola1, Luca Bergamaschi1, Cristiana Pedone1, Maria Giulia Vincini1, Matteo Pepa1, Mattia Zaffaroni1, Stefania Volpe1, Jérôme Doyen2, Piero Fossati3, Karin Haustermans4, Morten Høyer5, Johannes Albertus Langendijk6, Raul Matute7, Ester Orlandi8, Hillevi Rylander9, Barbara Rombi10, Esther Troost11, Roberto Orecchia1, Daniela Alterio1, Barbara Alicja Jereczek-Fossa1,12
1European Institute of Oncology, Radiation Oncology, Milan, Italy; 2Centre Antoine Lacassagne, Radiation Oncology, Nice, France; 3MedAustron Ion Therapy Center, Karl Landsteiner University of Health Sciences, Wiener Neustadt, Austria; 4PARTICLE proton therapy center, UZ Leuven, Leuven, Belgium; 5Danish Centre for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark; 6University Medical Center Groningen, Radiation Oncology, Groningen, The Netherlands; 7Centro de Protonterapia Quironsalud, Radiation Oncology, Madrid, Spain; 8Italian National Center for Oncological Hadrontherapy, Radiation Oncology, Pavia, Italy; 9Skandionkliniken proton facility, Radiation Oncology, Uppsala, Sweden; 10Proton Therapy Center, Radiation Oncology, Trento, Italy; 11Institute of Radiooncology - OncoRay, Helmholtz-Zentrum Dresden-Rossendorf, Rossendorf, Germany; 12University of Milan, Oncology and Emato-Oncology, Milan, Italy