Perrone, L. (1977) “The papillosphincterotomy in hydatid liver cysts opening into the biliary tract”., Cirugía del Uruguay, 47(2), pp. 131–135. Available at: https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/2830 (Accessed: 26 May 2026).