Efficacy of Verapamil Combined with Zinc Oxide for Anal Fissure Management. Journal Port Science Research, [S. l.], v. 7, n. issue, p. 545–548, 2024. DOI: 10.36371/port.2024.special.42. Disponível em: https://jpsr.uruk.edu.iq/index.php/jport/article/view/252. Acesso em: 23 may. 2026.