CHAIROJANA, P.; SRIPUD, N.; PRAKORNGWONG, P.; SIRAPRAPASIRI, T. Comparative Study for Serological Diagnosis of Syphilis between VDRL and TPHA. Journal of Health Science of Thailand, [S. l.], v. 2, n. 2, p. 105–109, 1993. Disponível em: https://www.thaidj.org/index.php/JHS/article/view/6572. Acesso em: 9 dec. 2025.