Diagnostic performance of two rapid tests for syphilis screening in people living with HIV in Cali, Colombia by García Luna, JA, Romero-Rosas, N, Silva Peña, SA, Oviedo Sarmiento, OJ, Galindo Orrego, X, Lenis Quintero, W, Perea, LC, Martínez Buitrago, E, Osorio, L, Salazar, JC, Smith, AD, Alexander, N