Luankosolchai, R.-A., A. Wongkajornsilp, S. Haubprasert, V. Chanyavanich, and N. Tisavipat. “Immunotherapy of Human Glioblastoma Multiforme Using Ok-432, An Immune Stimulant. The Detection of Tumor-Derived Immune Suppressor(S)”. Journal of Basic and Applied Pharmacology, vol. 21, July 2015, p. s82, https://li01.tci-thaijo.org/index.php/JBAP/article/view/37373.