Khayaiwong, P. ., S. . Rittiplaeng, N. . Khamta, P. Junrach, P. . Jeindon, A. . Kongkirit, C. . Chamnanmor, and W. . Nguanthean. “The Quality Control of Delivering Radiation Therapy Using Check List Verification Document”. Journal of Thai Association of Radiation Oncology, vol. 27, no. 1, May 2021, pp. R43-R53, https://he01.tci-thaijo.org/index.php/jtaro/article/view/247575.