Effendi, Ida, Yeva Rosana, Andi Yasmon, and Wresti Indriatmi. “Multiplex Nested Polymerase Chain Reaction for Treponema Pallidum Using Blood Is More Sensitive Than Using Serum”. Universa Medicina 37, no. 1 (April 19, 2018): 75–84. Accessed March 25, 2023. https://univmed.org/ejurnal/index.php/medicina/article/view/587.