Buppasiri, Pranom, and Sarayoot Chaisitt. “Incidence of Positive VDRL in the Second Antenatal Screening for Syphilis at Srinagarind Hospital, Khon Kaen University”. Srinagarind Medical Journal 24, no. 4 (November 1, 2013): 292–295. Accessed March 28, 2024. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13036.