MICALLEF, J.; BARNS, M. High perianal fistula: a narrative review of common management techniques. International Surgery Journal, [S. l.], v. 10, n. 1, p. 186–194, 2022. DOI: 10.18203/2349-2902.isj20223281. Disponível em: https://www.ijsurgery.com/index.php/isj/article/view/9289. Acesso em: 3 oct. 2025.