Sojo Durán, Enrique, and Gonzalo Estapé Carriquiry. “Contribution of New Methods at the Diagnosis of Gastric Cancer”. Cirugía Del Uruguay, vol. 45, no. 2, Feb. 1975, pp. 97-105, https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/2567.