Authors: Hanneke Martinussen1, Liesbeth Boersma1, Maria Jacobs1, Hans de Boer2, Johan Cuijpers3, Maarten Dirkx4, Katrien De Jaeger5, Mirjam Mast6, Karin Mondriaan7, René Monshouwer8, Naomi Nathan6, Annerie Slot9, Gabriëlle Speijer10, Floortje de Vreugt11
1Maastro Clinic, Radiotherapy, Maastricht, The Netherlands; 2University Medical Center Utrecht, Radiotherapy, Utrecht, The Netherlands; 3Amsterdam University Medical Center, Radiotherapy, Amsterdam, The Netherlands; 4Erasmus Medical Center, Radiotherapy, Rotterdam, The Netherlands; 5Catharina Hospital Eindhoven, Radiotherapy, Eindhoven, The Netherlands; 6Haaglanden Medical Center, Radiotherapy, Den Haag, The Netherlands; 7Radiotherapiegroep, Radiotherapy, Arnhem, The Netherlands; 8Radboud University Medical Center, Radiotherapy, Nijmegen, The Netherlands; 9Radiotherapeutisch Instituut Friesland, Radiotherapy, Leeuwarden, The Netherlands; 10Haga Ziekenhuis, Radiotherapy, Den Haag, The Netherlands; 11University Medical Center Groningen, Radiotherapy, Groningen, The Netherlands