Kelly, S M, Effeney, R, Gaze, M N, Bernier-Chastagner, V, Blondeel, A, Clementel, E, Corning, C, Dieckmann, K, Essiaf, S, Gandola, L, Janssens, G O, Kearns, P R, Lacombe, D, Lassen-Ramshad, Y, Merks, H, Miles, E, Padovani, L, Scarzello, G, Schwarz, R, Timmermann, B, van Rijn, R R, Vassal, G, Boterberg, T, Mandeville, H C & the QUARTET Project and the SIOPE Radiation Oncology Working Group 2022, ' QUARTET : A SIOP Europe project for quality and excellence in radiotherapy and imaging for children and adolescents with cancer ', European Journal of Cancer, vol. 172, pp. 209-220 . https://doi.org/10.1016/j.ejca.2022.05.037 the QUARTET Project and the SIOPE Radiation Oncology Working Group 2022, ' QUARTET : A SIOP Europe project for quality and excellence in radiotherapy and imaging for children and adolescents with cancer ', European Journal of Cancer, vol. 172, pp. 209-220 . https://doi.org/10.1016/j.ejca.2022.05.037 European Journal of Cancer, 172, 209-220. Pergamon EUROPEAN JOURNAL OF CANCER