B. C. Estrella-López, R. J. Aguilar-Berrezueta, and S. A. Machuca-Vivar, “Challenges in the early diagnosis of rheumatic fever in marginalized areas of Ecuador”, RUGC, vol. 3, no. S1, pp. 92–100, Mar. 2025, Accessed: Oct. 31, 2026. Available: https://revistacientifica.ugc.mx/index.php/rugc/article/view/103