Lertboonyapan, Jutisin, and Dumnoensun Pruksakorn. “Chordoma Management: A Review of the Literature”. The Bangkok Medical Journal 15, no. 1 (February 20, 2019): 107. Accessed October 23, 2021. https://he02.tci-thaijo.org/index.php/bkkmedj/article/view/222716.