Chemical sphincterotomy is good alternative option to surgery In Management of chronic fissure in ana. مجلة اليرموك, [S. l.], v. 9, n. 9, p. 95–100, 2018. Disponível em: https://journal.al-yarmok.edu.iq/index.php/alyarmoukjournal/article/view/694. Acesso em: 29 مارس. 2026.