Sangchan, P., Jothaisong, S., & Ponyeam, D. (2020). Pattern of failure after adjuvant postoperative radiotherapy in head and neck cancers. Journal of Thai Association of Radiation Oncology, 26(1), R76-R97. retrieved from https://he01.tci-thaijo.org/index.php/jtaro/article/view/240021