di Leoni, Francisco, Carlos Leoni, and Roberto Perdomo. “Digestive Hemorrhage Due to Chronic Gastroduodenal Ulcus”. Revista Cirugía del Uruguay 45, no. 4 (February 23, 1975): 325–328. Accessed May 19, 2024. https://revista.scu.org.uy/index.php/cir_urug/article/view/2626.