Estefan, A. (1985) “Partial lateral internal sphincterectomy vs. manual anal dilatation in the treatment of anal fissures.: Prospective and randomized study”., Cirugía del Uruguay, 55(1), pp. 64–67. Available at: https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/3651 (Accessed: 29 March 2026).