J. J. Real Cotto, L. E. Jaramillo-Feijoo, J. P. Tanca-Campozano, G. R. Puga-Peña, L. C. Pacheco-Vila, and R. A. Real-Roby, “Mortality of Malignant Neoplasms of Digestive Organs in Ecuador, Period 2019-2023”, Rev. Oncol. Ecu., vol. 35, no. 2, pp. 33–41, Aug. 2025.