LATERAL INTERNAL SPHINCTEROTOMY VS BOTOX INJECTION FOR TREATMENT OF CHRONIC ANAL FISSURE. Frontier in Medical and Health Research, [S. l.], v. 3, n. 7, p. 8–11, 2025. Disponível em: https://fmhr.org/index.php/fmhr/article/view/1017.. Acesso em: 11 sep. 2025.