[1]
A. Estefan, G. Carriquiry, F. Lago, J. C. Falchetti, and R. Grezzi, “Anal fissure treated ambulatorily by means of partial lateral internal sphincterectomy.: A propósito de 43 casos”., Cir. Urug., vol. 55, no. 1, pp. 68–70, Apr. 1985.