¹H.U. LA PRINCESA, MEDICAL PHYSICS, MADRID, Spain; ²H.U LA PRINCESA, MEDICAL PHYSICS, MADRID, Spain; ³H.U.LA PRINCESA, MEDICAL PHYSICS, MADRID, Spain; ⁴H.U. LA PRINCESA, RADIATION ONCOLOGY, MADRID, Spain; ⁵H.U.LA PRINCESA, RADIATION ONCOLOGY, MADRID, Spain

¹Maria Sklodowska-Curie National Research Institute of Oncology, Third Radiotherapy and Chemotherapy Department, Gliwice, Poland; ²Maria Skłodowska-Curie National Research Institute of Oncology, Third Radiotherapy and Chemotherapy Department, Gliwice, Poland; ³Maria Skłodowska-Curie National Research Institute of Oncology, Brachytherapy Department, Gliwice, Poland; ⁴Maria Skłodowska-Curie National Research Institute of Oncology, Radiotherapy Department, Gliwice, Poland; ⁵Maria Skłodowska-Curie National Research Institute of Oncology, Second Radiotherapy and Chemotherapy Department, Gliwice, Poland

¹ University of Florence, Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Florence, Italy; ² Erasmus MC Cancer Institute, Department of Radiation Oncology, Rotterdam, The Netherlands; ³ University of Florence, Department of Experimental and Clinical Biomedical Sciences “Mario Serio”,, Florence, Italy; ⁴ Erasmus MC Cancer Institute, Department of Radiation Oncology, Rotterdam, The Netherlands; ⁵University of Florence, Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Florence, Italy; ⁶ Erasmus MC Cancer Institute, Department of Radiation Oncology,, Rotterdam, The Netherlands

¹The University of Manchester , Division of Cancer Sciences, Manchester, United Kingdom; ²The Christie NHS Foundation Trust, Medical Physics, Manchester, United Kingdom; ³The Christie NHS Foundation Trust, Department of Radiology, Manchester, United Kingdom; ⁴The Christie NHS Foundation Trust, Department of Radiation Oncology , Manchester, United Kingdom; ⁵The University of Manchester, Division of Cancer Sciences, Manchester, United Kingdom

¹Catalan Institute of Oncology (ICO), Catalan Cancer Strategy, Barcelona, Spain; ²University of Barcelona , Faculty of Medicine, Clinical Sciences, Hospitalet de Llobregat, Spain; ³Georges Pompidou European Hospital, Radiation Oncology , Paris, France; ⁴Paris Descartes University, Paris Sorbonne Cité, Paris, France; ⁵Aarhus University Hospital, Department of Oncology and Danish Center for Particle Therapy, Aarhus, Denmark; ⁶University of Milan, Department of Oncology and Hemato-oncology, Milan, Italy; ⁷IEO European Institute of Oncology, IRCCS, Division of Radiotherapy, Milan, Italy; ⁸University Hospitals Leuven, Leuvens kankerinstituut, Leuven, Belgium; ⁹Amsterdam University Medical Centers, Radiation Oncology, Amsterdam, The Netherlands; ¹⁰National Center for Radiation Research in Oncology, Faculty of Medicine and University Hospital Carl Gustav Carus, Dresden, Germany; ¹¹Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Radiotherapy and Radiation Oncology, Dresden, Germany; ¹²Institute of Radiooncology – OncoRay, Helmholtz-Zentrum Dresden - Rossendorf, Dresden, Germany; ¹³German Cancer Consortium (DKTK), Partner Site Dresden, and German Cancer Research Center (DKFZ), Dresden, Germany; ¹⁴Partner Site Dresden, Germany: German Cancer Research Center (DKFZ), National Center for Tumor Diseases (NCT), Heidelberg, Germany; ¹⁵Ghent University Hospital and Ghent University, Radiation Oncology, Ghent, Belgium