Thaiyanan, P., S. Somwangprasert, and S. Makankawkayoon. “Alpha-fetoprotein in patient with liver cancer and relation to hepatitis B surface antigenn”. Journal of Associated Medical Sciences, vol. 14, no. 1, July 2016, p. 35, https://he01.tci-thaijo.org/index.php/bulletinAMS/article/view/61910.