Cosco Montaldo, Homero, and Juan P Soto Carriquiry. “Morphinic Liver Colic and Its Pathophysiology: 2a. Part. Action of Morphine on the Oddi Sphincter and the Common Bile Duodenal Crossroads. Electromanometry in Biliary Surgery”. Cirugía Del Uruguay, vol. 34, no. 5-6, Apr. 2020, pp. 386-99, https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/1737.