Estapé, Gonzalo, and Humberto Viola Núñez. “Diagnosis and Treatment of Volvulus of the Sigmoid Colon”. Cirugía del Uruguay 43, no. 5 (February 21, 1973): 419–422. Accessed June 14, 2026. https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/2487.