[1]
A. Estefan, G. Carriquiry, A. Colet, J. Domínguez, and R. Grezzi, “Partial lateral internal sphincterectomy vs. manual anal dilatation in the treatment of anal fissures.: Prospective and randomized study”., Cir. Urug., vol. 55, no. 1, pp. 64–67, Apr. 1985.