J. C. Delgado Zambrano, “MICROBIOLOGICAL CONTAMINATION OF DRINKING WATER AND GASTROINTESTINAL DISEASES: A SYSTEMATIC REVIEW”, CEUS, vol. 5, no. 2, pp. 33–38, Jan. 2024, Accessed: Nov. 12, 2026. Available: https://ceus.ucacue.edu.ec/index.php/ceus/article/view/200