Oungsakul, T., P. Pramyothin, and S. Hong-ing. “Hyperhomocysteinemia and Genetic Polymorphisms of Methylenetetrahydrofolate Reductase in Acute Lymphoblastic Leukemia Children Treated with High Dose Methotrexate”. Journal of Basic and Applied Pharmacology, vol. 26, no. 3, July 2015, pp. 171-9, https://li01.tci-thaijo.org/index.php/JBAP/article/view/36414.