Temiyasathit, S. ., S. . Prombuako, P. . Chamnanjan, S. . Thanaseelangkool, S. . Chancampa, S. . Raisawai, C. . Yuwachit, A. . Sornsomlit, S. . Nanthawan, K. . Loonprom, C. . Surayatip, and S. . Sangrajrang. “Risk Factors of Nasopharyngeal Cancer: A Case Control Study in Udon Thani”. Thai Journal of Toxicology, vol. 25, no. 1, June 2020, p. 5, https://li01.tci-thaijo.org/index.php/ThaiJToxicol/article/view/243915.