Sutthichon , Ponlawat, and Kijja Jearwattanakanok. “Treatment Success and Associated Factors in Unknown Stage Syphilis Treated With Standard Regimen in Nakornping Hospital”. Journal of Nakornping Hospital 11, no. 2 (November 16, 2020). Accessed May 8, 2024. https://he01.tci-thaijo.org/index.php/jnkp/article/view/245233.