Suntadvoot, C., M. Tepmongkol, and C. Lamom. “A study of V.D.R.L. in various diseases”. Siriraj Medical Journal, vol. 22, no. 8, Nov. 2023, pp. 794-00, https://he02.tci-thaijo.org/index.php/sirirajmedj/article/view/264309.