Arkaravichien, W., J. Chareonjai, S. Tiparost, and A. Chiyakum. “A Survey of Drug Use in Pregnant Women of the ANC Clinic at Srinagarind Hospital”. Srinagarind Medical Journal, vol. 12, no. 2, Nov. 2013, pp. 83-87, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13988.