Comparative Study between Closed versus Open Lateral Internal Sphincterotomy in the Treatment of Chronic Anal Fissure. International Research Journal of Pharmacy, [S. l.], v. 16, n. 12, p. 104–111, 2025. DOI: 10.56802/wf4jz625. Disponível em: https://irjponline.org/index.php/irjp/article/view/3445. Acesso em: 28 jul. 2026.