Estephan Mendez De Leon, et al. “Characterization of Canine Patients With Heart Disease Based on Age at the Pet`a Vet Veterinary Clinic in Guatemala City, Guatemala”. Global Journal of Medical Research, vol. 24, no. G1, May 2024, pp. 7-12, https://medicalresearchjournal.org/index.php/GJMR/article/view/102542.