High dose image-guided, intensity modulated radiation therapy (IG-IMRT) for chordomas of the sacrum, mobile spine and skull base: preliminary outcomes - Chen, Andre Tsin Chih; Hong, Carlos Bo Chur; Narazaki, Douglas Kenji; Rubin, Virginio; Serante, Alexandre Ruggieri; Ribeiro Junior, Ulysses; Lima, Luiz Guilherme Cernaglia Aureliano de; Coimbra, Brian Guilherme Monteiro Marta; Cristante, Alexandre Fogaça; Teixeira, William Gemio Jacobsen (Journal of neuro-oncology, 2022)