Estefan, Alberto, Guillermo Carriquiry, Fernando Lago, Juan C Falchetti, and Roberto Grezzi. 1985. “Anal Fissure Treated Ambulatorily by Means of Partial Lateral Internal sphincterectomy.: A propósito De 43 Casos”. Cirugía Del Uruguay 55 (1):68-70. https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/3652.