SURENDHAR, D. G. .; SATHISH, D. V. .; SURENDER, D. D. . Open versus closed lateral internal anal sphincterotomy for chronic anal fissure: A prospective randomized comparative study. Student’s Journal of Health Research Africa, Africa, v. 7, n. 3, p. 13, 2026. DOI: 10.51168/sjhrafrica.v6i12.2440. Disponível em: https://sjhresearchafrica.org/index.php/public-html/article/view/2440. Acesso em: 31 mar. 2026.