¹Erasmus MC Cancer Institute, University Medical Center Rotterdam, Department of Radiotherapy, Rotterdam, The Netherlands

(1)Fondazione Policlinico Universitario "A. Gemelli" IRCCS, Dipartimento di Diagnostica per Immagini- Radioterapia Oncologica ed Ematologia, Roma, Italy;

¹Hospital Universitario Marqués de Valdecilla, Radiation Oncology Department, Santander, Spain; ²Hospital Universitario Marqués de Valdecill, Radiation Oncology Department, Santander, Spain; ³Hospital Universitario Marqués de Vadecilla, Radiation Oncology Department, Santander, Spain; ⁴Hospital Universitario Marqués de Vadecilla , Radiation Oncology Department, Santander, Spain; ⁵Hospital Universitario Marqués de Vadecilla, Radiation Oncology Department, Santander, Spain

(1)Tomsk Polytechnic University, Research School of High-Energy Physics, Tomsk, Russian Federation;(2)Tomsk Polytechnic University, School of Nuclear Science & Engineering, Tomsk, Russian Federation;(3)Moscow City Oncological Hospital No. 62, the 1st Radiological Department, Moscow, Russian Federation;(4)Cancer Research Institute of Tomsk National Research Medical Center of the Russian Academy of Sciences, Radiotherapy Department, Tomsk, Russian Federation;

(1)Paul Scherrer Institute, Center for Proton Therapy, Villigen PSI, Switzerland;(2)ETH Zürich, Departement of Physics, Zürich, Switzerland;(3)EPF Lausanne, Departement of Physics, Lausanne, Switzerland;(4)University Hospital Bern, Department of Radiation Oncology, Bern, Switzerland;(5)University Hospital Zürich, Department of Radiation Oncology, Zürich, Switzerland;

(1)Heidelberg University Hospital, Department of Radiation Oncology, Heidelberg, Germany;(2)University Hospital of Zurich, Department of Radiation Oncology, Zurich, Switzerland;