Beddok, A.; Saint-Martin, C.; Mammar, H.; Feuvret, L.; Helfre, S.; Bolle, S.; Froelich, S.; Goudjil, F.; Zefkili, S.; Amessis, M. High-Dose Proton Therapy and Tomotherapy for the Treatment of Sacral Chordoma: A Retrospective Monocentric Study. AO 2021, 60, 245-251.