Yodtongde, Nattiya, Vipa Boonkitticharoen, Mantana Dhanachai, and Putipan Puataweepong. 2012. “Comparison of Second Cancer Risk in Patients With Liver Cancer Treated By Stereo-Tactic Body Radiotherapy and Three-Dimensional Conformal Radiotherapy”. Ramathibodi Medical Journal 35 (3):202-10. https://he02.tci-thaijo.org/index.php/ramajournal/article/view/135188.