Prognostic impact of the “Sekhar grading system for cranial Chordomas” in patients treated with pencil beam scanning proton therapy: an institutional analysis

by Anna-Lena Hottinger, Beat Bojaxhiu, Frank Ahlhelm, Marc Walser, Barbara Bachtiary, Stefan Zepter, Tony Lomax, Alessia Pica, Damien C. Weber
Published 2020-05-01