(1)University Hospital Zurich, Department of Radiation Oncology, Zurich, Switzerland;(2)University Hospital Zurich, Department of Dermatology, Zurich, Switzerland;(3)University Hospital Zurich, Department of Nuclear Medicine, Zurich, Switzerland;

¹Cruces University Hospital, Biocruces Bizkaia Health Research Institute, Radiation Oncology, Barakaldo, Spain

(1)University of Turin, Department of Oncology- Radiation Oncology, Turin, Italy;(2)University of Turin, Department of Psychology, Turin, Italy;(3)The Institute of Cancer Research and the Royal Marsden NHS Foundation Trust, Joint Department of Physics, London, United Kingdom;(4)Gustave Roussy Cancer Campus, Department of Medical Physics, Villejiuif, France;(5)University Hospital of Salamanca, Department of Radiation Oncology, Salamanca, Spain;(6)Maria Sklodowska-Curie Institute - Oncology Center, Department of Soft Tissue/Bone Sarcoma and Melanoma, Warsaw, Poland;(7)Hopital Europeen Georges Pompidou- Universite Paris Descartes, Department of Radiation Oncology, Paris, France;(8)The Netherlands Cancer Institute- Antoni van Leeuwenhoek Hospital, Department of Radiation Oncology, Amsterdam, The Netherlands;(9)GROW – School for Oncology and Developmental Biology- Maastricht University Medical Center, Department of Radiation Oncology, Maastricht, The Netherlands;(10)University Hospital for Radiation Oncology Tubingen, Section for Biomedical Physic, Tubingen, Germany;(11)Trinity College Dublin, Applied Radiation Therapy Trinity Research Group- Discipline of Radiation Therapy- School of Medicine, Dublin, Ireland;(12)Norwegian University of Science and Technology, Department of Physic, Trondheim, Norway;(13)GROW – School for Oncology and Developmental Biology- Maastricht University Medical Center, Department of Radiation Oncology, , The Netherlands;(14)Arctoris, Arctoris, Oxford, United Kingdom;(15)Gustave Roussy Cancer Campus, Department of Radiation Oncology, Villejiuf, France;(16)University Hospital Zurich and University of Zurich, Department of Radiation Oncology, Zurich, Switzerland;(17)Erasmus Medical Center, Department of Medical Physics, Rotterdam, The Netherlands;(18)ESTRO, ESTRO Office, Brussels, Belgium;

¹Puerta de Hierro University Hospital, Radiation Oncology, Madrid, Spain; ²Puerta de Hierro University Hospital, Radiation Oncology, Radiation Oncology, Madrid, Spain; ³Puerta de Hierro University Hospital, Surgery, Madrid, Spain

¹Erasmus MC Cancer Institute, Radiation Oncology, Rotterdam, The Netherlands; ²Delft University of Technology, Radiation Science & Technology, Delft, The Netherlands